Detective Comics #649 (1937)
Part 3 of the 3-part 'Return of the Cluemaster': Batman and Robin must stop the Cluemaster's most extravagant crime yet: a robbery at the grand opening of a mall, where the Spoiler plans to have her own revenge on the Cluemaster. Continued from the previous issue. Written by Chuck Dixon, with art by Tom Lyle and Scott Hanna. Cover by Matt Wagner.