 Frasier and Niles learn that their childhood home is up for sale, and they go to look at it as potential buyers. They recall leaving a time capsule in the floor, but the owner refuses to allow them to pry the floorboards loose to look for it. They sneak back in that night, pop the floorboards up, and discover much to their surprise a skull. Their minds now race as they try to solve their newest "Crane Boys Mystery". Roz wrestles with how to explain death to Alice after her hamster dies.