The Other Side of Night begins with a man named David Asha writing about his sudden separation from his son, Elliot. Next, we step into the life of Harriet Kealty, a police officer trying to clear her name after a lapse of judgment. She discovers a curious inscription in a book: Help me, he's trying to kill me. This note leads Harri to David, who was last seen stepping off a cliff. Police suspect he couldn't cope after his wife's death. Still, why would this man leave behind his young son? Quickly, Harri's attention zeroes in on Ben Elmys: once the love of her life. A surrogate father to Elliot and trusted friend to the Ashas. Ben may also be a murderer.