Das Gasthaus an der Themse

A serial killer named The Shark is terrorizing London by killing his victims with a speargun and then, dressed in a scruba-diver's wetsuit, using the city's sewer tunnels to make his getaway.

Atmospheric thriller that has a great sea setting with an inn on the harbour and plenty of fog and murky underwater scenes. The villain here is a menacing killer donned in a scuba diving outfit and his tool of the trade is a spear gun - this is reminiscent of the slasher films where the fiend is donned in an outfit and uses a particular weapon. Matching him is a very determined police inspector played by Joachim Fuchsberger. Other undesirables are Klaus Kinski who plays a seedy character and stealing the scene is Elisabeth Flickenschildt as the creepy innkeeper who is low enough to sell her niece to an old man. There's plenty to enjoy here- it's fast-paced, focused and has some tense scenes. The killer's identity came as a surprise.