Alibi for a corpse

When a pair of inquisitive children on holiday discover a skeletonhidden in the boot of an abandoned car, Detective Superintendent Pollard faces an uncomfortable feeling of frustration, for never before has there been such an uncommunicative corpse: no dental work, no old fractures, and no missing persons corresponding to the skeleton's size and age. Pollard had to find out not only 'whodunit', but to whom.