Ronnie Lake first appeared during season 8 to be the trainee partner of Sara Sidle when the latter transferred to swing shift. Lake is very talkative and asks a lot of questions. In the episode Goodbye and Good Luck, she attempts to get an abused woman into a shelter. When Sara resigns in the same episode, she leaves a note in Ronnie's locker wishing her good luck. The character has not reappeared since that episode, however, nor has any mention of her been made.