Quote from Niles in Daphne Returns
Frasier: It was called "The Crane Boys Mysteries." They were two plucky lads who used their keen psychological insights to solve crimes brought home by their detective father.
Roz: How many of these did you write?
Frasier: Thirty-four. Yes, there was "The Mystery of the One-Eared Monkey", "On Your Mark, Get Set, Die!", and there was the one where our father was kidnapped and the only clue was a dented Ballantine can.
Niles: "The Suspicious Six Pack".