Mummy Munster

S1 E32: Herman agrees to become Grandpa's guinea pig, when he develops a sleeping pill that can be timed to wake up the used at any specific moment. After Herman takes the pill, Lily tells him he must go to pick up Marilyn who is waiting for him at the museum. The pill is not supposed to take effect for anther hour, and Grandpa claims he has plenty of time. At the museum Herman fails to locate Marilyn and mistakes a mummy case with a phone booth. He is still inside when the pill takes effect and the next morning the museum curator mistake him for a perfectly preserved mummy.