The Raw Shark Texts by Steven Hall

Eric Sanderson awakes with his memories erased by a traumatic incident. He finds a note in the foyer of his home, apparently written by himself before his memory loss. “If you are reading this,” the message states, “I’m not around any more. Take the phone and speed dial 1.”

The phone call brings him to a Dr. Randle, who tells Sanderson that his amnesia i…