Help I need to know wich one is the night and shining whatever!?!?

Hey Im doing this Grey´s Anatomy project and I need to know if in the episode that Meredith tried to drown herself in the bath tub and Meredith told Derek that he wasnt his night in shining what ever and he told her he was is it correct she sagte the night in shining whatever??And wich episode was it?? Please help!!!