Dale Waddington

The staff tries to deal with physical and emotional trauma in the wake of the vengeful gunman's deadly rampage; Derek makes a spontaneous decision to resign as chief and return to surgery.

The BAU investigates a case in Rossi's hometown, forcing him to revisit his personal and professional past.

Alan befriends a gay man at a single parent meeting, but he makes both Alan and Charlie doubt their sexual identities.

Amelia arrives at Seattle Grace to beg Derek to help with the gliosarcoma case; Cristina and Owen have heated arguments during marriage counselling; Alex realises he needs to improve his people skills in order to be a good doctor.

Frankie gets Brick to snitch on his siblings. Sue blackmails Axl to submit to her commands. Mike attends Brick's school for Parents' Day.

Rex Van De Kamp narrates the happenings on Wisteria Lane; Edie gets an unexpected visitor from her past; an unanticipated pregnancy creates complications.