The Seven Dials Mystery by Agatha Christie

Title: The Seven Dials Mystery
Author: Agatha Christie
Publication: Bantam paperback, originally published in 1929
Genre: Mystery (well, obviously)
Setting: England

Description: At a country house party, Gerry Wade sleeps so ridiculously late every morning that his friends decide to play a joke on him by setting so many alarm clocks he will be forced to wake up.