There are three things that can keep John Morlake awake at night. For the last ten years, he has spent his life trying to solve the mystery of the unknown sailor that had been found dead close to a highway. During the same 10 years 'The Black', a mysterious robber from London's underworld has been able to terrorise the city by carrying out daring robberies and evading capture.

Outside of the criminal world, Morlake uses a lot of energy thinking about the big city financier trying to buy the Estate of Lord Carston with the idea that he can get the hand of the lord's daughter, Lady Joan, as part of the bargain. What is curious about the financier is that he has business connections in Morocco and the UK. Why Morocco? As time goes by and the plot unravels, Wallace begins to realise that the three mysteries he has spent so much time thinking about are not three mysteries, but one!

Readers looking for the next didn't-see-that-coming thriller like 'Behind her Eyes' by Sarah Pinborough will fall for this novel immediately. A TV series based on the novel premiered on Netflix in 2021 with Eve Hewson, Tom Bateman, Simona Brown and Robert Aramayo in leading roles.

Edgar Wallace (1875-1932) was an English writer so prolific, that one of his publishers claimed that he was behind a quarter of all books sold in England. An author, journalist and poet, he wrote countless novels, short stories, screen plays, stage plays and historical non-fiction. Today, more than 160 films have been made from his work. He died suddenly in Hollywood in 1932, during the initial drafting of his most famous work, "King Kong".