FOUR MYSTERIES. FOUR STORIES. ONE COMMON KEY… It was an evening like any other for the Conisters until Paul came up the stairs to the first floor. He didn't come back for a long time, so Maggie, his wife, went upstairs to follow him. She found his phone and wallet by the bed, all the windows were locked from the inside. After Paul, the ground collapsed. Private investigator David Raker specializes in missing persons and knows that every disappearance - no matter how improbable at first - has a logical explanation. But he never dreamed where the Paul Conister case would lead him. And that's just the beginning of his troubles... What connects a gruesome discovery on the London Underground, a reopened shelved case in which a key witness and prime suspect mysteriously disappeared, and a seemingly random shooting thousands of miles away? David Raker will be the key to finding the truth