Hotel der toten Gäste (1965)

Hotel detective Janos Kovacs travels from San Remo, where the Schlagerfestival will soon be held, to London. He wants to sell critical information to the crime reporter Barney Blair. Before Barney arrives, Kovacs is stabbed. On the advice of his boss, Barney travels to San Remo to investigate Kovacs' last mission at Hotel Atlanta.