Detective comics #525 (April 1983). Slab graded by CGC Universal grade 9.4.. appearances by killer croc Batman, Jason Todd, Dick Grayson(Robin), James Gordon, Vicki Val, and Joseph and Trina Todd. Story by Gerry Conway, Joey Cavalieri, art by Dan Jurgens and Irv Novik, and cover by Ed Hannigan and Dick Giordano. Green arrow back up story.