Shot in New York City locations, this film, also titled SPELL OF THE HYPNOTIST, opens with escaped murderer George Morley (Frank Marth) being trapped by police officers upon a high bridge, prompting a psychiatrist, Dr. James Hamilton (Eric Fleming) to attempt hypnotising, with the approval of the on-scene police supervisor, the killer whose vicious crimes he has been following through newspaper reports. An onlooker at the scene, Ann Summers (Nancy Malone) is apparently simultaneously also hypnotised and subsequently visits Hamilton at his office, with the doctor, attracted to the young woman, beginning treatments for her in a case that he perceives as an instance of dual personality, Ann's body ostensibly being shared with a reincarnated Austrian, Baroness Maria Vetsera, lover of Hapsburg Crown Prince Rudolph, and co-participant in the infamous sex scandal that culminated in the royal hunting lodge, Mayerling, with their mutual suicide pact in 1889. This manner of theme, that narrating a multiple personality disorder, requires a good deal of cinematic talent to be convincing, but such is not on board here, the film suffering not only from a poorly organised script and weak direction, but also from a particularly wooden Fleming, whose expressivity is nearly completely non-existent, a deadly flaw indeed in a story that is depicting his character as being in love with his patient. Malone tries hard but her lines, as with much of the screenplay's dialogue, are not credibly written, and the pacing of the piece is notably erratic with a result that a viewer will probably feel as little emotional involvement in the action as does the stoical Fleming.