Jack Haines reports a break-in at his greenhouse, but other than the destruction of some expensive orchids, there?s no damage and nothing is missing. Yet Detectives Sloan and Crosby sense something sinister, and their suspicions are confirmed when similar reports multiply. The pair is drawn into an equally perplexing case when the mysterious Miss Enid Maude Osgathorp goes missing. Soon it becomes clear that the two cases are linked ? but how?