Review of The Upturned Glass

This film was released at the height of the interest in psychological thrillers.the film starts up quite slowly works up to a crescendo and then rather falls flat at the end.It is nevertheless an intriguing film in many ways.Mason has it fixed in his mind just how easy it would be to kill Kellino.However the reality is that it turns into a violent struggle with him ending up strangling her then tossing her out the window.This rather anticipates the scene in Hitchcock's Torn Curtain with the gruesome killing of the Stasi agent.One wonders if Mason wished he had gone through with the actual deed bearing in mind his acrimonious divorce from Kellino a few years later!There is mention of an upturned glass but its meaning is never properly explained.At the end Mason commits suicide by leaping off a cliff.This is incorrect for 2 reasons.Firstly nowhere in the description of Paranoia,is there an indication that the symptoms include suicidal tendencies.Also there are no chalk cliffs near Portsmouth.One final point.I wonder if the American censors office asked for a change of endings.They would not sanction a suicide by a criminal as they considered it a mortal sin.Also they insisted on moral compensating values ie the villain must pay for his sins.