The Seven Dials Mystery by Agatha Christie..A practical joke goes chillingly, murderously wrong in Queen of Mystery Agatha Christie’s classic detective story, The Seven Dials Mystery. Gerry Wade had proved himself to be a champion sleeper, so the other houseguests decided to play a practical joke on him. Eight alarm clocks were set to go off, one after the other, starting at 6:30 a.m. But when morning arrived, one clock was missing and the prank then backfired, with tragic consequences.


For Jimmy Thesiger in particular, the words "Seven Dials" were to take on a new and chilling significance...