Scotland Yard must discover why people are being murdered by a monstrous dog at Blackwood Castle.

A private detective tries to find out how and why some convicts have mysteriously disappeared from the prison of Dartmoor.

After an automobile accident, in which a man is unrecognizably burnt to a crisp, his wife's only able to confirm the corpse's identity by his talisman: a small, white spider. However, soon, there are more corpses walking around than at a comic con convention and every single one of them was a white spider sitting on or nearby the body.

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.