Greg sat in his office looking over a report. Alison was at home with Ethen. He wasn't feeling well, and she decided to stay with him swapping shifts with Messer. The phone on his desk rang, and he picked it up.

"Detective Greg Sanders." He picked a pen up, getting ready to take notes.

"Your nephew Sean is here. Can I send him up?"

"Yeah, tell him I'll meet him at the elevator." Greg grabbed his crutches, hanging the phone up before heading to the elevator. The elevator door opened, and Sean was standing with Stella.

"Look who I found on my way up." She smiled.

"Thanks, Stella. I put the report you were asking about on your desk. I think your findings are correct." Stella held up her hands.

"That's Jo's problem, now remember. This is my last week at the lab." Greg smacked his forehead.

"That's right, New Orleans, here you come." Sean shifted nervously, and Greg led him back to his office, waving goodbye to Stella. Sean didn't say anything taking the seat across from Greg. He looked down at his hands.

"What's up, Sean."

"I was supposed to be like a regular school assignment, and then this pops up and then…." Sean was panicking. Greg held up his hand, stopping him.

"What assignment."

"Family Ancestry. You know, you, like, spit in a tube, and you send it out, and they tell you all about your relatives." Greg smiled.

"Yeah, I've worked with DNA on occasion. What's the problem?"

"Mine go a match. A first cousin." Greg set his cup of coffee down. "It's not Nicky. It's a guy."

"Let me see the report. Maybe it's on your mom's side." He said, handing over a file. Greg opened it, looking over the information. His chest tightened as he looked over the information.

"Either Erin, Jamie, or Al has a kid no one told me about." Greg's stomach turned at Alison's name. "Could it be my dad?"

"No, it would have come back as a sibling. So, you don't have to worry about that."

"How do you know." Greg leaned forward in his chair, pointing at the results.

"Here, see these markers. There would be more if you were more closely related. This is the same leave you would have if we were looking at Ethen's DNA compared to yours."

"Do you have any kids you haven't told us about?" Greg forced a smile, a dark possibility filling his mind.

"No. This doesn't give any information about him. Have you tried to contact him?"

"I didn't even tell my dad. I came straight here. I thought that you would be able to help since you did DNA and all."

"I'll look into it. On one condition."

"What."

"You wait to contact him or tell anyone else until after I can figure out what's going on." Sean held out his hand.

"Deal."

Greg opened the door to the apartment.

"Hey, hun," Alison said, running over and taking the cup of coffee out of his hand.

"What brings you home on your break in between shifts."

"I wanted to see how Ethen was doing and have a few minutes with you." He kissed her, walking over to the couch where Ethen was lying on the couch. He was wrapped up in his blanket.

"His fever broke about an hour ago, but I think I'm going to stay home tomorrow too. Eddie needed me to look into a duffel bag, so I'm doing what I can from home. But I might ask Messer for help if it's something I can't do on my computer." She explained, walking back into the kitchen. "So, what did you want to talk about." Greg sat at the counter.

"Have you ever thought about getting your DNA tested?" Alison leaned against the counter.

"Not really. I mean, my DNA is on file." She started to rub her wrists, looking to the left.

"But I haven't really thought about who I'm related to. Why do you ask." Greg ran his hand through his hair.

"Sean has to run his DNA for a class assignment." Alison's eyes locked in on his.

"You want to know if Ethen has a half-sibling." Greg got up walking around the counter.

"From the first time." Alison shivered, rubbing her scars. Doing her best to keep her breath even. She walked over to him, and he wrapped his arms around her.

"I'm sorry." Alison smiled, looking up at him, her eyes watering. "But with what's in the letters, I have to ask."

"No, Greg Ethen doesn't have any siblings. He made sure of it."

Greg knocked on the door to Stella's apartment. His stomach was in knots. This week was giving him whiplash. A tall man opened the door. He looked to be about Nicky's age.

"Can I help you?" He asked with a thick Brooklyn accent. Greg smiled.

"I was wondering if I could talk to Stella for a minute; I work at the lab with her." The man-sized him up.

"Hey Ma, someone's here to see ya." The man called out. Gesturing for Greg to step into the entryway of the apartment. Stella walked around the corner carrying a box of pictures. She spotted Greg dropping the box.

"I thought you were Mac." The man ran over to her, picking up the glass that had broken from the frames.

"He is still coming. I needed to talk to you first before you left town." She nodded, looking down at the man.

"I need to talk to Sanders for a minute. Why don't you go to the pizza shop we like and get some. Mac is coming by later, and I promised him some." The man looked in between the two of them before getting up, kissing Stella on the cheek, and walking out. Greg watched him leave, staring at the closed door.

"He looks like Joe." There was silence. Greg turned, looking at Stella. Her eyes were one of the broken picture frames. He walked over, trading his crutches for a broom keeping his weight on his good leg while he helped her clean. She looked up at him.

"How." It was simple, but her words carried weight.

"Sean had a project at school where he had to take a DNA test. He came to me because he thought he had a sibling and knew I would know what to do." Greg tossed the glass in the trash.

"But it wasn't a sibling. It was a cousin who is a cop and whose mom has known the Reagan's for years and never said a word." Stella shook her head.

"I didn't know how to tell them."

"Did Joe know about his son," Greg asked, pointing at the door?

"No."

"Why the last name Joe Hill." Stella reached into the box of pictures handing him over a frame. He stared at it, all the air sucked out of his lungs.

"Because that was Mary's maiden name." It was a picture of Mary Reagan holding a toddler he assumed was Joe. A smile turned up the corner of his lips.

"The one Reagan that didn't go into the family business was the one Reagan that knew." Stella smiled.

"She was there for me all the way up to her death. She never told another person. If I had died, she was going to make sure that Joe was looked after. When she died, Mac took on that role." Greg shook his head.

"Why did she keep the secret." Stella smiled.

"Because I asked her to, and Joe wasn't ready. When he was, it was too late; he was dating someone else."

"I just can't believe this. I have known you for 10 years and never knew that you had a son. You were one of Alison's bridesmaids. How did you keep this to yourself?" Stella stood setting the box on the table.

"Because I knew the pressure that all the Reagan's are under, and I didn't want to put Joe under that like his father was." She put her hands on her hips. "Are you going to tell them?"

"I have been dodging Sean since he told me until I could talk to you, but he's going to want to know about this relative. He almost contacted Joe before I talked to you. It's only a matter of time before they all know." The door to the apartment opened, and Joe Hill walked in with the pizza that he had gotten.

"Do what you have to do, Greg, and I will do what I have to." He nodded, waving goodbye to Joe.

"All the best to you, Stella."

Greg wanted to be anywhere but sitting across from Frank.

"So, you have something to tell me," Frank asked, folding his hands on his desk. "Is this personal or professional." Greg looked around his office. He hated this room. Painful memories were etched into the walls and floors. And he was about to add another.

"Personal." Frank leaned back in his chair.

"And why are talk here and not at my house…."

"Because I wanted to talk to you alone without the others knowing." Frank nodded.

"Does this have anything to do with Alison or Ethen?" Greg's mind shot to the letters, but he quickly pushed them away.

"No, Sir, it has to do with Joe." The pain on Frank's face made Greg feel like he had shot him.

"What about Joe."

"He had a son." Frank sat up in his chair.

"What but how." Greg handed over the report.

"Sean's class assignment where he had to get his DNA test came up with a match. He came to me to take a look at it." Frank scanned the report.

"How old is he."

"24."

"Have you met him?"

"Yesterday, when I went to see his mom, he was there." Frank turned the page.

"Who's his mom." Greg took a deep breath.

"Detective Stella Bonasera." Frank looked up at that.

"What." Greg was almost finished with the bad news, so he ignored his questions.

"His name is Detective Joe Hill." Frank froze at that name. "He's a cop-out of Brooklyn where Stella worked before getting the job at the lab. He is in the firearms investigation unit."

"Hill?" Greg chooses his words carefully.

"According to Stella, Mary knew about him and promised to keep him a secret as long as she got to visit him every so often." Frank's lips were pressed hard together. "I'm sorry you had to find out this way. You asked Sean to give his report on Sunday, and I didn't want you to get blindsided." Greg's phone went off. "I'm sorry, but Mac needs me back at the lab." Frank waved him off. Greg got to his feet, pausing at the door. "Stella starts her Job in New Orleans next week. If you have any questions, now might be the time to talk to her."

"Thank you, Greg. I'll take care of it."

Alison grabbed the front door for Greg, carrying Ethen in one arm while keeping a crutch in the other. Ethen had fallen asleep on the way over to her dad's house.

"I'll take him up to your room." Alison kissed Ethen's floppy brown hair.

"Thanks. But are you going to be able to make it up?" She whispered. Greg glanced over at the dining room.

"No, but you go ahead." Alison rolled her eyes before heading into the dining room. The rest of the Reagan family was already sitting there except her dad. "What's going on?"

"Don't look at me," Sean said as she took her seat.

"Yeah, I had to come all the way over here," Jamie said.

"You poor baby, Al had to bring a sick 3-year-old with her. How is the kid?" Danny asked. Alison smiled as Greg sat next to her, grimacing as his knee bent.

"Doing better we were coming anyways Greg has to leave soon to go back to the lab."

"Your dad asked me to call you," Henry explained. The front door opened and closed. "Here he is." Frank walked in, taking his seat at the head of the table, not saying a word. Alison reached over. Grabbing Greg's hand, she glanced over at him. Was this it where they all going to find out about the letter? Greg shook his head ever so slightly, squeezing her hand.

"Okay." Frank started looking at each of them. "Joe fathered a son he never knew about." Alison's eyes snapped over to Greg, who was looking at his hands.

"What," Erin said, expressing the confutation they all had.

"Wow. I did not see that one coming." Sean said.

"Nor I," Frank replied.

"We don't know anything about this," Danny said, looking over at Sean raising his eyebrow. "Did you know something about this?"

"Yeah, it started with my family ancestry project for school." Alison's eyes again turned to her husband. Their conversation earlier in the week was still fresh in her mind, along with the nightmares that it had brought. That was the main reason she and Ethen would spend the night here and not at the apartment.

"Detective Joe Hill of the Firearms Investigation Unit." Frank started pulling her from her thoughts.

"The NYPD Firearms Unit?" Jamie asked.

"Yep."

"How do we know that our Joe didn't know about him?" Henry asked.

"His mother told me."

"Sure, it isn't some kind of scam or something?" Danny asked.

"Yeah, you are sure this whole thing checks out?" Jamie added.

"They use the same DNA tests that you guys use for crime scenes," Sean explained. "Very accurate."

"So, what makes him 25, 26?" Erin asked.

"24."

"Does he know about us," Danny said.

"I don't think so." Frank crossed his fingers in front of him. "The way he carries himself, though. He kind of sets himself before he's gonna say something."

"Like Joe did," Alison whispered out.

"Yeah, it was almost familiar. The same way he talked about being on the job. It was like how all of you did when you first came on the job. Like being a cop was like playing for the Bulls with Jordan or the drums with Springsteen. It was just familiar." Erin shook her head.

"I'm just blown away."

"When can we meet him," Sean asked.

"I don't know," Frank said, taking a drink.

"Why don't we just invite him to Sunday dinner." Sean continued.

"Well, there's one other thing. How's he going to feel. When he finds out who's on his father's side of the family."

"I think we should meet him together," Erin said.

"Agreed," Henry said.

"Hill isn't that mom's last name," Alison asked, causing them all to look at her.

"Mary knew about him." Alison's stomach turned. She hated this. She hated everything about this situation.

"Who's his mom then." Frank took a deep breath.

"Stella." The air that had been in the room was sucked out in a moment.

"Seriously," Danny called.

"All this time, she has had Joe's son and never had the decency to say anything. I mean, she was at Alison's wedding."

"She did what she thought she had to." Greg leaned over.

"Uh, I hate to do this now, but I have to go." Alison nodded, getting up with him and walking him to the door. "I'm sorry to leave you with this." He pointed back at the table. Alison crossed her arms.

"You knew about Joe. That's why you asked me." Greg looked down at his hands.

"Sean came by my office when he first got the results; he thought that he might be a sibling at first."

"You saw that it was a cousin and had to ask the question you've been afraid to ask me."

"I wanted to avoid this whole family thing. With the letters and all."

"Thanks, I appreciate it." Greg's teeth clenched.

"If I handled it better, you wouldn't be staying here tonight." Alison shivered slightly.

"Ethen and I are going to be fine. From the way that conversation in there is going, I feel we would be staying no matter what. Erin will want all the information before any of us can leave" She kissed him goodbye. "Now, you better get going before Mac reports you missing."

"Love you."

Greg walked into the kitchen at Frank's house, leaning his crutch against the table. Alison was holding Ethen in her arms while putting rolls in a basket. Greg slipped up behind, grabbing Ethen. She smiled up at him.

"Hey, look who finally decided to show up." Greg kissed her.

"Sorry, the judge gave Erin only 2 days to bring all the evidence for her case to the grand jury. Hawkes and I have been trying to get everything sorted out." He looked around the kitchen. "Where is everyone." Alison turned around, pulling the ham out of the oven.

"In the dining room." Greg glanced at the ham.

"Maybe it was a good thing that Joe backed out of having dinner with us." Ethen laughed.

"No, Daddy uncle Danny made it. Mommy is taking it out for him." Greg squeezed his son.

"Even my son thinks I'm a bad cook." Alison smiled as Eddie walked into the kitchen.

"I don't think you're a bad cook, Al."

"Thank you."

"But I also haven't eaten that much of your cooking." Alison threw a towel at her, then passed her the basket or rolls and grabbed the ham. The four of them walked into the dining room.

"Look who decided to show up," Danny called out, waving at Greg.

"Your son is late," Frank called out, noting the empty seat next to Greg.

"Well, he left his phone in the car," Danny explained.

"There are no phones at the table," Henry called out.

"That has never stopped Al or Greg," Jamie called out.

"Only on days when we are on call to be fair," Alison said, taking her seat next to Ethen.

"I don't know what to say. He likes to have it close by." Danny defended. "Come on, Sean." Sean walked into the entryway, pausing.

"Sorry, I'm late uh…." A large smile slipped across his face. "We have company." They all turned to look at him. "Everyone, uh, this is my cousin Joe." Greg smiled at the familiar face of Joe Hill. He shifted slightly.

"Hi, everybody, uh..." He laughed, the nerves clear. One by one, all the Reagans got up, introducing themselves to him. Alison walked over with Greg.

"Alison Reagan-Sanders, this is my husband Greg and our son Ethen." Joe waved at Ethen then shook Greg's hand.

"Long time no see, Greg. My mom has talked about the two of you." Alison smiled.

"She taught me everything I know."

"Wait, when did the two of you meet," Henry asked, looking up at Greg.

"Greg was the one that helped me sort this all out," Sean called out, earning some looks from the other Reagan. Joe walked over to Frank, who was patiently waiting.

"Commissioner, I hope this is okay." Frank smiled.

"It's more than okay, Joe, and call me…call me whatever you want."

"Yes, sir."

"Except, sir." Joe laughed, and they all took their seats at the table. Alison leaned over to Greg.

"I don't think I've seen my dad this happy in a long time." Greg smiled.

"Yeah, not even when I started coming to these."

"That's because he had a bet with Danny that you would get scared away." Greg handed Ethen a roll.

"That wasn't going to happen as long as Ally sat next to me."