Legends of the Dark Knight — DC Comics
Issue: #3
BAD NIGHT, GOOD KNIGHT PART 3! The Joker is dying from the chemicals he was going to use to wreak havoc in Gotham. Batman only has enough anti-toxin left for one person. Does he save his greatest foe? It sounds like a mortality riddle...what other villain could be waiting for Batman to fail?!
Creators: Dave Wielgosz, Richard Clark, Darick Robertson, Simon Bowland, Diego Rodriguez
Story arcs: Bad Night, Good Knight