Toby Dyke, saturnine journalist, gets a mysterious call to investigate the death of Lou Capell (who had spent the previous night at his flat). While Toby and his companion, George, try and work out who is setting the fantastic murder traps that keep popping up around the place, the questions pile up. As Toby gets closer to the crime, he eventually puts all of the pieces of the jigsaw together, but will it lead him to the correct answer?