This lesser, but still enjoyable Hammer thriller, opens with racing car driver Alan Colby (Ronald Lewis) suffering a serious head injury in a car crash as he departs on honeymoon with new wife, Denise (Diane Cilento). After recuperation, the pair head off to the French Rivera for a delayed honeymoon. Unfortunately Colby cannot perform sexually and is prone to sudden rages that frequently lead him to attacking Denise. The pair meet with renowned French psychiatrist, Doctor Prade (Claude Dauphin) who appears inordinately keen to help Colby, going so far as to follow the couple back to London. With Colby becoming increasingly erratic and Prade coming up with more elaborate cures, the danger escalates and the mystery deepens. Director Val Guest and Ronald Scott Thorn (who wrote the novel on which the film is based) deliver an elaborate, if repetitive and overly talky script. The narrative has a tendency to wander and some elements are far from credible, particularly portions of the repressed memories jumbo-jumbo that Prade has a tendency to spout. It is therefore to Guest’s directorial credit that he manages to make the mystery quite so compelling and manages to maintain close interest in developments throughout. Some sequences are individually first class, particularly the opening pull-back that reveals the car crash, which is played out to a perfectly inappropriate upbeat jazz number. There is also a number of surprisingly risqué elements for the time with a topless Diane Cilento happy to enjoy a bubble bath that leaves little to the imagination. Gilbert Taylor’s crisp black-and-white photography is lovely and he expertly captures much of the charm and ambience of the Rivera. The three main players are good - Diane Cilento is bonnie and vivacious (despite an accent that wanders throughout Italy, France and England); Ronald Lewis veers between cloying love and dangerous volatility in a heartbeat, while well-known French actor Claude Dauphin is intelligent, sly and charming to a fault. Overall “The Full Treatment” has multiple flaws but it still works as a decent mystery. Elements of the plot may be overly drawn out and overly talkative but there is enough in the acting performances, the technical capability on show and the overall themes to make it interesting and entertaining all the way to the end. ( )