The Facts of Lice - S4.E18

After Niles is depressed about his life as a butler, he begins to act strange and while he is cleaning, he drops a piece of paper containing a list of items that convinces Fran that Niles is possibly a murderer due to his recent strange behavior and the contents of his list. A search of his room confirms her suspicions. During a stormy night, Maxwell takes the children out for dinner leaving Fran and Niles alone. Niles approaches Fran and she thinks Niles is about to murder her. He confronts Fran about how she knows what he is up to when in fact he is simply writing a play.