Young Anthony March living in London inherits a considerable amount of money but his crooked uncle Dr Manuel Ceneri steals it When Anthony gets suspicious Ceneris partner in crime Macari persuades Ceneri to kill him However just as they commit the murder a blind man Gilbert Vaughan mistakenly enters the house Anthonys sister Pauline sees the murder faints and loses her memory Thinking they have gotten away with the murder Ceneri and Macari soon find out that theyre in for a shock