Out of the Blackout — Robert Barnard

LITTLE BOY LOST
He called himself Simon Thorn. He arrived in the village of Yeasdon with the other children evacuated to escape the London blitz. But his name appeared on no list. The address he gave didn't exist. His sparse belongings revealed no clue to his origins. The kindly couple who took him in knew only that he'd wake up screaming "Don't kill her! DON'T!" What horror had destroyed Simon's memories? Who had sent him to Yeasdon? And what would compel him to find his lost past... a forgotten victim and a vicious killer?