"248"^^ . . . "\"Death-Knell for a Traitor!\""@en . "Batman Issue 248"@en . . . "Batman"@en . . . "March 1973"@en . "Batman battles Colonel Sulphur and an ex-Navy man who turned traitor during World War II to gain a fabulous diamond from the Japanese, which he now seeks to recover."@en . . . "Batman battles Colonel Sulphur and an ex-Navy man who turned traitor during World War II to gain a fabulous diamond from the Japanese, which he now seeks to recover."@en .