The Shadow # 18 - Double novel.The Unseen Killer and the Golden Masks [first edition]

Pulp fiction's legendary Knight of Darkness returns in two of his most engrossing adventures. In a battle between The Shadow and an invisible man, who will have the last laugh? You'll find out, as Lamont Cranston investigates a strange series of murders by "The Unseen Killer." Then, the Dark Avenger attempts to strip "The Golden Masks" from a secret society of hooded blackmailers who are extorting millions with a bizarre invention. This classic pulp reprint also features both classic color covers by George Rozen, all the interior illustrations by legendary illustrator Tom Lovell, and commentary by pulp historian Will Murray.