From England to Egypt, accompanied by his elegant and trustworthy sidekicks, the intelligent yet eccentrically-refined Belgian detective Hercule Poirot pits his wits against a collection of first class deceptions.

Mr and Mrs Stafford decide to run an "open" marriage, which, of course, relies on complete honesty.

Steve runs away from home, having argued with his father, and hides in a slate mine where his friend Paul finds him and brings him back. However, on returning to their village the two boys find the place completely deserted. Or so they think.