Lexi DiBenedetto

The family is determined to make Alex celebrate her senior ditch day and Phil, Luke and Haley forcefully take her out but end up at an unexpected detour.

The team must stop a gang of suspected murderers that is targeting a new victim nightly.

Derek and April fight to find a solution for the hospital; Cristina works to respect the wishes of a dying boy's family; Arizona identifies with a teenager who is facing similar problems.