Jessica gets talked into going to a well-known and disliked hypnotist's show at a popular night club by her editor's assistant. Not long after she arrives, the hypnotist gets murdered in a locked roomful of journalists, who happen to be under the man's spell. The baffled police have no shortage of suspects and soon turn to Jessica's assistance in solving the crime.

Jessica investigates the attempted murders of a legendary Broadway actress and her talented daughter, due to star in a new musical production. But as Jessica uncovers the truth, her own life is put in danger.