This is like a Dostyevsky thriller, you know the murderer from the start, and you have the privilege of together with the script writer gradually intersecting him piece by piece, to get into the very heart of the matter of his complex psychology. Like Raskolnikov, he almost begs to get found out and be delivered, Eric Portman makes a fantastic performance by never sparing the poor murderer his tribulations, who can't help being what he is, he can't explain it and understand it either, and he even prays to God to be set free. The explanations of the malaise "being in the blood" is poor and does not hold. And then there are all the other persons getting involved, his poor mother above all, who never suspects her son to be as affected as his father until it is too late, and his girls, all innocents and suspecting nothing, and then the marvellous police officers, the meticulously methodical Roland Culver deliberately beating about the bush until he at last has evidence, and Stanley Holloway as his second, dutiful to the last. There are others also and precious details, the case about the cigar, the spectacular scenes at the fair and Hyde Park, and the towering thriller of the final settlement, almost reminding of "The Third Man" although being out in the open and in broad daylight. You feel the keen pen of Emeric Pressburger here in almost every detail, the famous partner of Michael Powell, who was the script writer of them and one of the best in film history. To all this comes the haunting melody of Mischa Spoliansky, a Russian composer who had to escape from Russia to Germany to later make his career in England with various film scores, but this could be his very best: actually reminding of Mario Castelnuovo-Tedesco's "Capriccio Diabolico" from 1935, expertly performed by Andrès Segovia among others. In brief, this very noir British thriller contains everything you could wish for, while the almost Dostoyeskian psychology is its major treat.