When a man disappears from the Isle of Man and reappears in London with no memory, Littlejohn is called to escort him home, only to find him shot dead 24 hours later. A week after Finlo Crennell, ex-harbourmaster of Castletown, is reported missing, he is found wandering the streets of London. Suffering from memory loss, he has no recollection of where he has been or how he came to be in London. He is escorted back to the Island by Chief Inspector...