Samuel prepares for new additions to his family, while Lydia warns him of the consequences. Claire discovers that her roommate Gretchen may have a hidden agenda. Meanwhile, Peter finds an ...

Cast: Masi Oka, Ali Larter, Hayden Panettiere, Greg Grunberg, Zachary Quinto, Cristine Rose, Milo Ventimiglia, Louise Fletcher, Madeline Zima, Ray Park, Dawn Olivieri, Deanne Bray, Christine Adams, Tessa Thompson, Rachel Melvin