This is likable but perhaps in the end a little too keen to confuse. With more sex and violence this would have been a giallo and we would have worried less about one after the other being made to appear the guilty one. Great start with robbery against the backdrop of Tower Bridge and we proceed with a fantastic little river trip amidst the docks that were. Hard now to recall just how dismal, dirty and downright depressing some of these bits of London were in the early sixties. Great to see now though and contrast with today.

The story slows as we go to the circus but there are plenty of period vehicles and fairly interesting turns to watch. Klaus Kinski, and Suzy Kendall have far too little to do and whilst not wishing to spoil anything, what a strange part for Christopher Lee!