Colors credit provided by Anthony Tollin.
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
Story continued from Detective #463.
Black Spider appears to die at the end of the story, but he returns in Batman #306.
Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. The records confirm Bob Rozakis as the writer, but they do not mention Laurie Rozakis.
Part 2 of the Calculator serial; story continues in Detective #465.
Letters of comment from Joe Peluso, William MacDonald Neville, Danny Raskio, Scott Gibson, Jim Guida and Gerald Duet.