Ordeal by Innocence — Agatha Christie

Dr. Arthur Calgary, the one man who could prove Jack Argyle's innocence, came forward at last--too late to save the young man convicted of the brutal murder at Sunny Point. Now Calgary is determined to clear Jack's name .. .

But if Jack didn't kill his adoptive mother, who did? As buried family secrets rise once more, suspicion turns to terror--and a ruthless killer prepares to strike again!