>When Chief Inspector McLean is sent to solve the murder of a young man in the West End of London he quickly realises that the death is the work of 'The Scorpion', an international criminal whose identity is unknown. McLean's enquiries lead him to Cornwall where he meets Celia, a beautiful pianist, who he suspects is an accomplice of 'The Scorpion'. The Inspector finds himself caught-up in a series of hair-raising adventures before he succeeds in identifying the ruthless killer.