Chilling in the extreme, ''The Lost Stradivarius'' is a classic tale of the supernatural. While practicing in his rooms in Oxford, gifted violinist John Maltravers notices a strange phenomenon: whenever a certain air is played, a mysterious presence seems to enter. Unable to rationalize this away, Maltravers becomes increasingly unsettled, until he makes a startling discovery--tucked away in a hidden cupboard in his room is a priceless Stradivarius! Obsessed by his find, he becomes increasingly withdrawn from those around him, choosing instead to explore more sinister pursuits, little knowing the spell that this seemingly perfect violin is unleashing upon him. English poet and novelist J. Meade Falkner is best remembered for his novel, ''Moonfleet.''