Dorothy L Sayers' amateur sleuth Lord Peter Wimsey returns in this collection of mysteries, introduced by crime writer Elizabeth George. A must-read for fans of Agatha Christie's Poirot and Margery Allingham's Campion Mysteries.   All that was left of the garage was a heap of charred and smouldering beams. In the driving seat of the burnt-out car were the remains of a body . . .   An accident, said the police.   An accident, said the widow. She had been warning her husband about the danger of the car for months.  Murder, said the famous detective Lord Peter Wimsey - and proceeded to track down the killer.