Philo Vance
Markham, there can be no doubt of it. The same person who strangled the Canary strangled Skeel. This new murder was done to cover up the first. Skeel was obviously blackmailing the Canary's murderer. He threatened to inform the police of what he had seen through the keyhole of the closet. And when the murderer learned yesterday at the poker game that the police knew who had been in the closet, he put Skeel out of the way at the earliest possible moment.