Scaliger returns to Edwards' house where he spots Edwards and Burkwald leaving (they are going to Mackleson to discuss merging their operations) and so phones Spindoe to tell him he can visit. Spindoe's letter repeating his ultimatum to his wife is delivered; meanwhile Mackleson's plot to murder Sheila is put into operation. Scaliger observes the Spindoe lookalike arriving and enters the house just as Sheila is murdered using the gun with Spindoe's fingerprints (the maid is conveniently able to witness the Spindoe lookalike); Spindoe arrives to find his wife dead and Scaliger presenting him with his letter threatening to kill her.