All characters

Dean Stavros

Played by: Nathaniel Buzolic in Pretty Little Liars

Dean Stavros is a character in Season 4 who made his first appearance in "Cover For Me." He is a drug and alcohol abuse counselor, who was hired by Spencer's parents to make sure Spencer is not taking drugs anymore after she is back from rehab. He is portrayed by Nathaniel Buzolic. Source: Pretty Little Liars Wiki