Imagine that you are trapped in a room. There is nothing in there. No windows. No bed. No mirrors. You are alone. It's dark. Food is given to you through a trapdoor. Hour by hour. Day by day. Months by months. You are going insane. One day you find out that you are not alone. She is just on the other side of the wall. You can hear her in your head. Now its two of you. What would you do? Would you manage to escape?

Elizabeth Tipton: the woman with everything. When Betty Tipton receives a threatening note, she takes upon every precaution possible. With a dozen constables by the spotlight, it's almost impossible for anything to happen, but once murder occurs, chaos arouses, and while Inspector Gleb is thrown into confusion as he struggles to deliver the truth, Hercule Poirot is already collecting the facts.