In 1920 London, a female coroner's officer seeks answers when a boy's body is found in the Thames . . . A body has emerged from the dark depths of the river. It's not an uncommon occurrence--but May Keaps takes every case seriously, especially when the deceased is a child. Was he simply playing too recklessly in the water, or is there more to the story? May knows that when children go missing, the reason is often linked to money...