The Poison Tomorrow is a one-shot graphic novel by Dennis O'Neil, with penciler Michael Netzer, inker Joe Rubinstein, colorist Lovern Kindzierski and letterer Todd Klein. The legendary Archie Goodwin edits.

Green Arrow follows a trail to Gotham City that brings him in direct confrontation with The Batman! The pair come across a dying chemist infected with a deadly poison! In Seattle, the chemist infected Black Canary! Before he can reveal a cure, the chemist dies. However, The Darknight Detective believes that the trail leads to - - Poison Ivy!