The Gray Phantom's Return

The Gray Phantom’s Return is a detective novel by American author Herman Landon.

The Gray Phantom was created by Herman Landon, the creator of Picaroon and Godfrey Usher; The Phantom appeared in Detective Story Magazine starting with Seven Signs.

The Phantom is Cuthbert Vanady, and he is a handsome devil, tall,
lanky, with a 'lean, clean-chiseled' face and ash-grey eyes to match the
gray at his temples and his gray business suits. The Phantom is more
than just good-looking, of course. He's a criminal mastermind.