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.

A London slasher pack the suitcases of his victims before stabbing them to death in this adaptation of Edgar Wallace's 'Secret of the Black Suitcases.'

The ghost of a hanged man returns to fulfill his promise. All of his accusers must die!

A ring of counterfeiters is flooding the country with phony money, and suspicion falls upon a wealthy playboy who may--or may not--have amnesia.

A hooded serial killer finds a novel way to murder his victims--he lashes them to death with a whip. The police try to track him down before any more murders occur.

When a wealthy man dies, his avaricious relatives look forward to inheriting all his money. However, he leaves a provision in his will that they all must spend a week together in his castle before they will be able to inherit anything. At the castle (which is cut off from the outside world), the relatives soon begin to be killed off one by one, each strangled with an Indian scarf.

Mobsters conspire to loot another criminal's treasure secured in an enormous booby-trapped vault.

A Chinese detective breaks up a drug smuggling ring and tries to find the "Daffodil Killer". The drug smugglers had devised the ingenious method of smuggling heroin from Hong Kong in the stems of daffodils.

A woman tries to protect her family's name when one relative becomes a murderer.

There is good reason for Sir Douglas Wonderly to summon the family and a lawyer to his stately home. He wants to announce a change in his will. At the same time, a dangerous mental patient escapes from a nearby psychiatric ward. Higgins and Lane are put on his trail. But the arrest of the psychopath proves to be extremely difficult. Shortly thereafter, a mysterious hooded man is on the loose in the castle. He frightens Sir Wonderly so much that the old man suffers a shock and falls into a coma. But that's not all: the will suddenly disappears and two sons are murdered. Sir John personally intervenes to solve the case with Higgins and Lane.

Lord Paddington, an honorable member of society, is blown up with a small tennis ball. "Die vier Gerechten" are not of this opinion, however: "Sentenced to death and executed for countless crimes" they leave at the scene. More honorable personalities must die before the perfume Higgins betrays the murderer and exposes the honorable personalities as heads of the organized trafficking of girls.

After a long time, a circus is back in the area of Tidal Basin and already the strange phantom has reappeared: the white clown! He robbed banks and stores without a system and disappeared without a trace. Lane and Higgins, together with the worn-out journalist Shapiro, hunt for the mysterious culprit in the dense London fog.