Solution—The Forgery Ring

1. Eric Doggin is neither killer nor passer. We also learn that the killer is not the passer.

2. Arnold Maine is neither the passer nor the penman.

3. David Ridley is neither passer nor killer.

Eric Doggin is not the killer or the passer. David Ridley is neither passer, nor killer. Therefore, as Arnold Maine is not the passer, he is the killer and, as the others have been eliminated, Monty Crandall is the passer.

* * * *

HIS UNDERSTANDING AT BEST IS OF THE MIDDLING SIZE.

—Swift