Conviction S01E03 - Breakup

Potter goes to a birthday party and when his friend takes out cocaine he leaves, but his friend is arrested later that evening. He seeks help from Potter, who turns the case over to Desmond without filling him in on the details of the night. Cabot is on an anti drug campaign, and Peluso has to prosecute a grandmother for heroin possession, when it was her grandson who was selling the drugs.