A few days went by and Alex still wasn't sure what was wrong with Casey. The stubborn redhead would go to work on her own, even though she and Alex were going to the same building and when she came home, she was aggravatingly quiet.

She just had this angry stare directed at well … anyone who looked at her. Unsure of where else to turn, the Bureau Chief called her older brother.

Tim had been about ready to sink his teeth into his breakfast burrito when … ding a ling.

"Aw crap!" I hope it's not work.

"Timothy Novak speaking."

"You sound so bureaucratic," Alex told him.

"Cabot, how's it hanging?"

"I've had better days. Casey has been really irritable lately, and I can't figure out what's wrong?"

Casey had always been quiet as a child. She seldom let people know when something was wrong and eventually, she'd blow up.

"Trouble at work?"

Alex didn't think so. Olivia's on the same case, and she said they were about to make an arrest. "She's been upset ever since I told her about this house I found."

"You found a house to rent?" That sounds nice. It would definitely be more spacious.

"Not to rent, to buy."

"Y'all are buying a house?"

Alex explained how her realtor had found the house and she went to see it alone. "I had to make an offer. It had everything we had talked about and houses go in a flash in Manhattan."

"When did Casey and Olivia see the house?"

They hadn't. Alex hadn't thought about that. "I brought back pictures."

Tim thought that might have been the problem. "Getting a house is a big deal. Maybe she feels left out."

Alex bit her lip. She jumped the gun and she knew it, but … the house had been so right. She could just feel it.

When the police picked up Adam, Peter was sure that his little scheme had worked. He laughed as he walked out of the office towards his gym. Unfortunately for him, Munch and Fin were waiting for him when he got there.

"Detectives … what can I do for you?"

"Interestingly enough, we ran the DNA sample you gave us through the system," Fin told him. "It matched our sample but … it didn't match the sample we had for Adam on file." Adam had signed up to be a bone marrow donor. His DNA was easily accessible and it did not match.

"Must have made a mistake?" Peter tried to get away but he got thrown into the wall instead.

"Let's see if your DNA matches the sample you gave us," Munch hissed before he handcuffed him. "Let's go!"

They read him his rights and hauled him to the station.

Casey and her detectives were in disagreement as to whether or not they needed to call Peter's counsel. Peter had a lawyer in the first interview, but he had not invoked his right to counsel.

One's right to counsel attaches either once you ask for a lawyer or once you've been indicted. Neither had happened, so Munch wanted to go ahead and get him to fess up.

"We don't have any real evidence." They only had Peter's false belief that they had his DNA. A confession could get them a warrant to search his place. Perhaps they'd find something there.

Casey knew what could happen if Peter's lawyer made a fuss to the judge, but maybe … just maybe they could get a plea deal before anyone noticed what they did. I'm going to regret this! "I'm giving you one hour to get him to talk."

47 minutes later, their suspect confessed that Melanie had been in the way. "It's not like I got any pleasure out of it. She's really not my type."

He made it sound like it was a public service he had performed.

In his apartment, they found photographs of Melanie. He had followed her for a week to learn when would be the best time for the attack.

On his laptop, they found . It purported to list all of the NYPD security cameras in a given area as well as any store surveillance systems.

Munch zoomed in on the map. "It's how he knew to pick this alley."

Casey was surprised when Olivia had the car after work.

"Where are we going?"

"I thought we could go for a drive on our way home."

Casey kind of hated taking a cab every day. She was still mad though. How could Alex just buy a house? She didn't even call them first.

The redhead should have known something was up, but she didn't until they got there.

She looked outside and saw … "this is the house."

Olivia cut off the engine. "Don't you think we should take a look?"

Casey pouted but she followed Olivia inside.

The real estate agent was waiting for them. "Oh you're going to love it."

I'll be the judge of that.

The portly woman took them for a tour.

Right away, Casey noticed how shiny it was. The coral colored tile sparkled as the sunlight caught it.

Olivia wandered into the living room. Obviously, the couch and television would go, but "this would be great for a Super Bowl party." The room was big, and the lighting was perfect for watching television.

They could also see the deck from the living room. Casey opened the door and went out.

They had some patio furniture and a gas grill in the corner. The yard was fenced in. Casey wondered what the neighbors were like: were they nice? Did they keep to themselves? Did their yards look like this one?

She had to admit it would be nice to have somewhere outside to sit when the weather allowed it. She spent way too much time cooped up in her office.

Food on a grill, kids running in the yard, this could be a very lovely family home.

Before she knew it, a familiar hand found her shoulder. "Want to check out the upstairs?"

She nodded slowly.

They went to see the rest of the house, and it was just as stunning. The master bedroom had two walk in closets.

"I bet Alex will fill both of them with her clothes," Olivia teased.

Casey couldn't help but laugh; she was such a clothes whore. The master bathroom had a Jacuzzi in it, a big one.

The other bedrooms and bathrooms were much simpler but they were spacious and the nearest bedroom could be a nursery.

"I have to admit, this is a great house," Casey had wanted to find something wrong with it, but any changes she could think of were easy fixes.

They left and headed back for their apartment.

"Why were you so cross earlier?" She shut herself off from both women, which was unusual for her.

"My mother was a kept woman and it showed. Any time she spent too much money at the grocery store or too much on our clothes, my dad would go ballistic. I promised myself I'd always make my own money. I wouldn't rely on anyone. Yet, no matter how much I work, I'm don't make shit, and Alex can afford to rain a house on us. I guess I was afraid … if things turned for the worse, I'd be trapped."

Olivia knew where she was coming from. Alex has trouble relating to them about money because she's always had it. She doesn't realize how jarring it can be when someone just throws money at you.

The redhead felt rather childish at the end of the day ... not for her concerns but for her lashing out instead of voicing them. "Can we stop by the store on the way home?" She wanted to get their blonde some chocolates.