S4, E23: A reluctant Naomi tries to sabotage the bachelorette party she has to host for Max's (guest star Josh Zuckerman) fiancee Madison (guest star Caitlin Thompson), where Madison's childhood crush, Nick Carter, makes a surprise appearance. At Max's bachelor party, Liam and Navid get into a fight over Silver and the evening comes to an end with people at both parties getting hauled to jail. Meanwhile, Ivy blames Annie and Caleb (guest star Robert Hoffman) for Diego (guest star Yani Gellman) having to go on the run. Nick Carter guest stars.