The film - described as the best in the Blake series of 1930s movies[3][4] - features the character of Sexton Blake and his efforts to defeat a major crime organisation headed by Michael Larron, a 'sort of Moriarty figure'.[5]
Of the film's villain, Leonard Maltin concluded, "Slaughter plays it basically straight in this passable low-budget outing";[6] while Dennis Schwartz wrote, "Tod Slaughter is a trip as the perverse villain drooling over both stamps and Julie (Greta Gynt), and decked out when meeting gang members in a spiffy black robe with a snake embroidered on its front and a fashionable KKK-like hood. Like Vincent Price, Slaughter can make a not too original low-budget B film fun to watch."[7]