I hope you also find a copy of 'the Long Arm', known here in the states as 'The Third Key'. The only copy I have was recorded from WGN Chicago's late night theatre. While it's just a good little movie, for some reason I have found myself watching this one many times. I have tried unsuccessfully to find a VHS or [better still] DVD copy. I am looking forward to some day seeing the original and hope to be awarded with new scenes cut from my copy as I was when I first viewed the DVD of 'The Cruel Sea'.
I've never seen 'The Intruder' and will now keep an eye open for it.