46. Episode 6169 (Thu 23rd Feb 2012) (Part 2)

Lisa is about to call the police over Zak's disappearance when he strolls in, leaving her and Sam stunned. Lisa wants to know where he's been, but Zak is uneasy as he can't remember and tries to cover. Lisa is astounded by his attitude and frustrated by his lack of answers, while he feels guilty for upsetting his family.