Based on her 1934 novel, Why Didn’t They Ask Evans? opens with a fine Agatha Christie enigma: a man lies dying at the foot of a cliff, apparently the victim of an accidental fall. With his final breath, he utters the mysterious question of the title and promptly expires. Some people - perhaps most people - might shrug at the impenetrable oddness of the words and move on with their lives. But Bobby Jones and his childhood friend, Lady Frances “Frankie” Derwent, are not most people. They resolve to honour the dead man by deciphering, and then answering, his final question. In so doing, they hit upon a dark conspiracy of deceit, betrayal and - perhaps unsurprisingly - murder.