Again we get to welcome back our guest writer JoymomentsSISTER Woohoo!!! So happy to have her back for the completion of this cross over!

Go read part 1 if you haven't already. Now on with the show!

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Cece kept glancing sideways as she followed Donovan back to the van. He had a stoic quietness about him that made being around him easy. Cece was sure he was the good cop when it came to doing interrogations with Carter.

"So, how long have you and Carter been married?" Cece asked as they crossed the street.

Donovan gave her a sideways glance but that was all. No emotion, no reaction and no hint that she had guessed right. She wondered if she was wrong.

When they reached the van, Carter was waiting outside for them. She looked at Donovan like she had already been proven right when she said this was a bad idea. Donovan looked back like he was asking her to trust him and Cece began to think she had been right about them being married.

"Miss Mackenzie," Carter said bitterly.

"Agent Carter," Cece said.

She mimicked Carter's stiff body language trying to show she wasn't intimidated by her.

"Alright," Donovan said, sensing things could get out of hand. "Lets get inside before anyone sees us."

"Ladies first," Carter said.

Cece laughed. "Please, I am not emotionally mature enough to be called a lady. Ma'am would do just fine."

Cece didn't need to be looking to know the kind of look Carter gave Donovan as Cece climbed into the van. Carter seemed to operate on two modes: hostile and annoyed.

To Cece's surprise, the two agents climbed into the back of the van behind her and shut the door. For the first since she had been in the van Cece didn't have two guns pointed at her and had the chance to look around. The back half of the van was setup with computers and gear and Cece looked closely at it all. Maybe her next novel would be a spy action and all these details would come in handy.

"So..." Donovan said, pulling Cece's attention back to them. "Miss Mackenzie, we would like to hear what you know about Freddy Wainwright." He nodded to her briefcase but she pulled out her phone.

"I thought you would never ask," Cece said.

Carter gave her a cold look but it quickly disappeared as Cece began to share all that she had learned over the last six months. To be honest, Cece was way behind on her latest book. But all the time she hadn't spent writing her novel had been spent at her front window, observing her neighbors, especially Freddy and Penelope.

Freddy and Penelope hadn't especially piqued her interest the first few days of her writer's block, but when Cece had purposefully stationed herself outside in order to 'naturally' meet them, they had shared so much personal information she had become suspicious. She had been living in Boston long enough to know that unless you were family, the pre-approved topics of conversation included the weather and the sports teams.

From Freddy and Penelope's accents she had known they weren't local, and she had a feeling there was something off about them. After their first conversation Cece had found her choice of distraction for this round of writer's block.

Other than her horrible cases of writer's block, Cece was a hard worker and the hard work didn't stop when it came to her distractions. She had logs of the Wainwright's comings and goings. A list and description of all their visitors, what type of food they liked to eat and their choice of brand for most home products. The last she had discovered by going through their trash.

"How do you know what type of utilities they have?" Carter asked suspiciously.

"Oh, I got them to invite me over for tea and used the opportunity to observe as much about their house as I could," Cece said.

It had only taken a month of observing their daily routine and getting to know them to confirm Cece's suspicion that there was more to the couple than they were letting on. Then the research had begun. It had been slow and tedious, but anything that kept her from writing held her interest.

She had scoured the internet for hours and when the normal resources of information began to dry up, she had paid some money to gain access to less legal sites, police databases and DMV records, to further the research.

What she ended up with was an extensive history of the Wainwright's dangerous and violent past. As she laid out each piece of information for Carter and Donovan, she watched their reactions, trying to judge whether the information was new to them or not.

By the time she had laid it all out, she guessed they had known ninety percent of what she had told them. But she also knew the ten percent they hadn't known was important by the looks they had given each other.

"So there you have it," she finished, clicking her phone off. "The history of Freddy and Penelope Wainwright, or should I say Paul and Darlene Howser."

The moment she had started talking, Donovan had started a recording device, and he had taken extensive notes. Carter had simply listened, as if she took in the information and could mentally file it into all the data she already had on the topic.

"This was very thorough," Donovan said. "I'm impressed a civilian was able to gain so much information. What resources did you use for your research?"

"Google," Cece offered, looking anywhere but at the agents.

She knew she had technically engaged in illegal behavior by accessing government sites and the dark web, but she wasn't going to admit that to two federal agents.

She knew both agents didn't believe her, but they dropped the subject.

"Thank you for sharing the information with us," Donovan said. "Your theories about the Wainwrights time in Florida was especially enlightening."

"I'm going to get this information to Mason," Carter said. "We need to confirm the legitimacy of everything. Miss Mackenzie, is there a way for you to share your files with us?"

"Do you guys have google docs?" Cece asked.

The agents smiled. "Yes, we can work with google docs."

"Great. Just give me an email to send them to."

Carter moved to one of the computers in the back and pulled out her phone to make a call.

"Hey Mason. Yeah, yeah, we can settle that debate later. I have some new information on the Wainwright case I want you to look into for me."

Cece reached for her briefcase as she tried to subtly listen in on Carter's phone call.

"No, its not coming through the agency's system," Carter said. "No, google docs."

Cece could hear the person on the other line let out a loud laugh and she watched as Carter's shoulders tensed with annoyance.

"Yeah, it's really hilarious. Laugh all you want, just give me an email address to send the information to."

Donovan watched as Cece laid the briefcase on her lap.

"Do you have physical copies of the research?" he asked, nodding to the briefcase.

"Oh no," Cece said. She snapped the locks and opened the lid to reveal a vast array of snacks. "Cookie?" she asked him.

He looked at the briefcase packed with food for a long moment before turning his gaze on Cece. For the first time she caught a hint of some emotion on his face. She couldn't be one-hundred percent sure, but she thought it was amusement.

"Thank you," he said, "but I am fine."

"Okay," Cece shrugged, selecting a bag of chips and opening them.

The noise of the bag gained Carter's attention and her response to Cece's bag of snacks held no amusement at all.

"It's a very very long story," Carter said into her phone, looking sideways at Cece as she began to chomp on her chips.

Cece watched as Carter wrote something down on a slip of paper then handed it to Cece. It was an email address.

"I hope your person can be quick. We don't want to miss our deadline," Cece said as she sent the google doc to the email Carter had given her. Once complete, she looked up to find both agents staring at her. "What?"

"Mason, I'm going to have to call you back," Carter said, never taking her eyes off of Cece.

As Carter hung up the phone, Donovan leaned in closer.

"What deadline?" he asked. His closer proximity made it clear that not giving an answer wasn't an option.

"The Wainwrights are going to Tahiti for two weeks. They're leaving in the morning," Cece said. "Did you really not know?"

Carter looked ready to chew Cece's head off.

"How do you know?" Carter said through gritted teeth.

"I'm driving them to the airport," Cece said.

Donovan gently rested a hand on Carter's arm as if to restrain her. He tried to make the movement subtle but Cece didn't miss the implication.

"And you didn't think to mention this before now?" Donovan asked.

"I thought you knew!" Cece said, throwing her arms up in frustration. "Seriously, I'm doing your job for you. What do you guys even do?"

Carter lunged across the van at Cece. Cece screamed in surprise. In an attempt to runaway, she toppled off the seat into the floor, spilling her briefcase of snacks everywhere as Donovan wrapped his arms around Carter's waist.

"You little piece of..." Carter growled.

"Carter!" Donovan said.

Carter was terrifying as she tried to swipe at Cece but Carter was no match to Donovan's strength. He moved her to the back to the van and set her in front of a computer.

"If this is true, we don't have much time," he said in a low voice.

Cece had crawled into the furthest corner of the van she could find and had covered her head with her arms, but she could hear Donovan calming Carter down. His voice had somehow gotten even deeper and he was talking slower. By the time Donovan had managed to calm Carter down enough that he could let her go, Cece had pulled herself back into her seat.

"Carter, call Mason now. We need to move this up the chain of command fast if we want to move tonight," Donovan said.

Carter gave Cece a chilling glare before pulling out her phone. Cece just looked back defiantly. Yes, she was terrified of Carter but she also found it pathetic Carter couldn't take a jab. Cece wasn't even going her hardest and Carter was reacting like Cece had spat on the honor of her father. Carter wouldn't last a day in the Mackenzie house.

"Miss Mackenzie," Donovan said, turning his deep soothing voice on her.

Cece rolled her eyes. "You don't have to work you hypno-mumbo-jumbo on me," she said. "I'm not the one who violently attacked someone."

Donovan looked at her, his expression unreadable. He waited a beat to see if she had anything more to say then cleared his throat.

"Please excuse my partner's outbreak," he said, although it was clear in his tone he didn't think any apology was needed. While he hadn't been the one to lunge at Cece, she could tell he thought Cece's jab had warranted the attack. "This case has taken a lot of time and a lot of work."

Cece just shrugged. If he was looking for an apology, he wasn't going to get one. As Cece saw it, they were lucky she was willing to come back and share all that she knew. They were lucky she had been crazy enough to break into their van to get their attention. It seemed to her that without her help, their case would be failing.

When it became clear Cece would not be offering an apology, Donovan moved on. "Can you tell me why you are the one driving the Wainwrights to the airport?"

"I noticed their bags were packed this morning and when I asked, they said they were going on a trip so I offered to give them a ride."

Donovan nodded. "How did you end up seeing their bags?"

"They were by their front door?"

"You were in their house?"

Cece nodded. "I took over muffins this morning. I bake."

"Miss Mackenzie, did it ever occur to you that interacting with the Wainwrights was dangerous?"

"No," Cece responded quickly, because she had thought about it before. "They have an MO. They go after extremely wealthy people connected to gangs or mobs. I'm on my last two dollars of my book advance and I'm sure they already know that."

Donovan shook his head like he couldn't believe Cece was real.

"Donovan," Carter called. She nodded him over and he joined her in the back of the van.

Cece looked at the ground while she listened carefully, trying to hear what they were saying. But it it was no use. She couldn't hear a thing. Her eyes focused on her scatter snacks covering the floor and she began to collect them and put them back into her briefcase.

She was searching under the chairs when Donovan finally spoke in a normal voice. Cece jerked up, eager to hear what he was saying but forgot she was still under the chair smacked her head. She gritted her teeth as she held in a stream of curses and slowly pulled her head out before sitting up. She looked at the back of the van and found Donovan on the phone and Carter smirking at Cece as Cece held the sore spot on her head.

"Yes sir," Donovan said, pulling both Carter and Cece's attention to him. He nodded as the person on the other line talked. "Yes sir."

Carter was able to understand something in his tone because she started to move. She crawled further into the back to a large black trunk. She opened it and pulled out two bullet-proof vests.

"SWAT will be here in twenty minutes. We move in twenty-five," Donovan said, hanging up the phone. Carter tossed him a vest.

The next twenty minutes passed in a blur as Cece watched Carter and Donovan prepare to move on the Wainwrights. Their movements were precise as they prepared their gear, it was like watching a dance. They each had their roll and they never got in each others way. Cece was so caught up in watching them she was startled when Carter opened the sliding door and climbed out.

"SWAT just pulled into the alley," she said. "I'll meet them while you finish up here."

Cece could tell they were so focused on the task at hand they were barely aware of her presence and she planned on taking advantage of that. She wasn't dumb enough to want to be at the center of the action but she had also didn't want to miss the big take down. She would find a spot out of sight of everyone where she could watch the action.

She looked at the window, assessing where would be best place when something cold wrapped around her wrist. She looked down to see Donovan locking one end of a handcuff to her wrist. He took the other end and attached it to the handle by the window.

"A precaution Miss Mackenzie," he said, giving her a look that told her he knew exactly what she had been planning.

"You can't do this," she argued. "I haven't done anything wrong."

"Impersonating a federal agent. Accessing secure police and agency databases."

He tossed them out like they were just the beginning of a long list. He grabbed his large assault rifle and climbed out of the van. He shut the door, Cece already forgotten as he went to join Carter and the SWAT team.

Cece let out an annoyed growl. This wasn't fair. She had worked six months for this moment and now they were stealing it from her. She refused to sit on the bench. With her free hand, she reached into her jacket pocket and pulled out her phone. She clicked on Elliot's name and prayed silently that Elliot wasn't already asleep. The phone rang several times before Elliot picked up.

"Unless you are in handcuffs getting dragged to jail, call Tristan," Elliot said.

"Funny story," Cece laughed. "About the handcuffs..."

"I'm serious Cece," Elliot said. "I just settled into the most perfect spot on the couch and I don't plan on moving until our movie is over."

"What if I was handcuffed in the back of an FBI van while a SWAT team prepared to raid our neighbors house?" Cece asked.

"Is this the plot to your next novel?" Elliot said through a yawn.

"I like it," Beck offered. "What are you thinking for love interest?"

"Who says there is going to be a love interest?" Elliot shot back.

"Why wouldn't there be a love interest?" Beck countered. "A female handcuffed in the back of an FBI van and your telling me there isn't one good-looking agent who hasn't caught her attention and her heart."

"Guys!" Cece yelled. "While I appreciate you figuring out the plot for my next novel, that is not what I am concerned with right now."

"Really?" Elliot said. "Because your agent called me four times today asking if you were writing."

"Stop!" Cece said. She could see the SWAT team at the edge of the alley preparing to move and she needed Elliot and Beck's help now. "Beck, go to the front window and tell me if you see a Painter's van across the street."

"I see it," Beck said after a moment.

Cece reached up to the overhead lights and flicked them on and off a few times. "Did you see that flickering? That's me."

"Cece...?" Beck said.

"What flickering?" Elliot asked.

Cece turned the lights on and off again.

"Cece, what are you doing in that van?" Elliot asked.

"It would take too long to answer," Cece said. "I need you to listen closely. In about a minute you will see a SWAT team cross the road to the Wainwrights house."

"Freddy and Penelope's house?" Elliot asked.

"It's a long story," Cece said again. "I need your help, so listen closely."

A minute later, Cece hung up the phone and watched as the SWAT team crept out from the alley and moved across the street, Carter and Donovan bringing up the rear. The team spread out, moving to all sides of the Wainwrights house they could access, but Cece's gaze was fixed on the other end of the street. She held her breath as she waited and finally, two figures appeared from around the wall of the corner store.

Quickly, Elliot and Beck crept down the street, staying to the shadows to avoid detection by the SWAT team. After her experience with Carter and Donovan, Cece understood these federal agent types didn't like civilians sneaking up on them.

"Finally," Cece said, when Elliot and Beck opened the door. "Unlock me."

Neither one of them responded as they took in Cece's situation.

"Cece, how...?" Elliot started to ask, but Cece cut her off.

"Just unlock me. I can explain later." Her gaze was out the car window, fixed on the SWAT team as they prepared to break down the Wainwright's front door. "Now!" she said louder, making Elliot jump into action. Elliot climbed into the car and pulled a small black case out of her pocket.

"Whats that?" Beck asked, as he watched Elliot open the case.

"Lock-picks," Elliot answered.

Cece rotated her hand and Elliot got to work on the lock.

Beck looked like he wanted to say something but after a minute he just shrugged, like he shouldn't be surprised anymore by the surprising things the sisters did. As Elliot worked on the handcuffs, Cece kept her gaze on the Wainwrights.

"Are you almost done?" Cece asked impatiently.

"I'm going as fast as I can," Elliot said. "Following a YouTube video is a lot different than actually trying to break your sister out of handcuffs."

But after a moment they all heard the click as Elliot unlocked the handcuffs.

"Thanks," Cece said, quickly climbing out of the van.

She turned to see the SWAT team burst the Wainwright's front door open and enter the house.

"Now, are you going to explain how you ended up handcuffed in the back of this van?" Elliot asked.

But