CBS | 8:00 pm
Season 5 of this hit prequel to "The Big Bang Theory" picks up the action right after the close of Season 4, which fans may remember ended on a suspenseful note. Sheldon's (Iain Armitage) parents earlier had gotten into a nasty argument during which George Sr. (Lance Barber) admitted to wife Mary (Zoe Perry) that he's unhappy with how his life has gone. He winds up in a bar, where he is approached by an appreciative and newly single neighbor (guest star Melissa Peterman). Is this marriage in trouble? Stay tuned.