Chapter 18:

Sam slams the locker door closed. The lounge door starts to open. Sam and Abby just stare at the door, not moving. In walks Morris, and Sam and Abby both let out a sigh of relief. Morris ignores them, and neither of the two girls say a thing until he leaves. "That was close," Abby says.

"Yeah," Sam replies, going over to Luka's locker to open it. She opens it and starts looking around.

"Find anything yet?" Abby asks.

"Not yet." Sam keeps looking. She finally looks on the top shelf and sees it – an envelope addressed to her and Luka's place from Africa. "Found it!" she says. Abby runs over as Sam carefully takes the letter out of the envelope. She unfolds the paper, and she and Abby start to read it.

Luka-

I'm coming home, back to Chicago. You probably know that already, but what you don't know is why. Kem and I broke up. Actually I broke up with her. It involves something with the past and a really big lie. I'm gonna tell you why when I come back, but you're the only one I'm gonna tell. I don't want anyone else to know, and after I tell you, you will probably understand why. Just wanted to update you on everything, cause your one of the few people I can trust along with Abby, but she doesn't need to know what happened, and neither does anyone else.. I'm probably gonna start rambling now, so I'll just end this letter. –John

After reading the letter, Abby looks incredibly disappointed. Sam sees her disappointment, and says, "Come on," grabbing Abby's hand to pull her along. Abby follows reluctantly.

"Luka Kovac!" Sam screams at the top of her lungs across admit. She is getting frustrated, which makes her temper flare up. Luka looks up, surprised. He walks over to an anger stricken Sam and a depressed looking Abby.

Completely clueless, he asks, "What?"

"Come here," Sam says, raising her voice a little. She grabs his wrist and pulls him to the privacy of the supply closet. "Tell her," Sam says pointing to Abby. Luka gives Sam a clueless look. "About why Carter and Kem broke up."

"What? I don't know why they broke up," he says, trying to sound like he has no clue what they are talking about.

"Yes you do," she says, shoving the letter towards him.

"How did you get that?" he asks.

"Luka, please tell Abby why they broke up. She needs to know. She is afraid if she doesn't find out, that there is a possibility Kem might come back, or Kem and Carter will get back together, if you tell her, she can talk to Carter about and get things straightened out."

"I can't."

Abby is still standing there silently. "Why not?" Sam asks.

"Abby, I want to help you, and I would do anything to help you, but I can't do this. Carter told me something that was confidential; I'm not willing to break his trust-"

"So instead Abby and Carters relationship can go into the gutter?" Sam says cutting him off.

"No, I don't want that to happen-"

"Then just tell us!" Sam says.

"I can't, but I can talk to Carter for you if you want, see if I can convince him to talk to you," he says, looking towards Abby. He starts to leave.

"Thanks," Abby says quietly as Luka walks towards the exit.