During the " Trinity War " storyline, Doctor Light is a reluctant member of the new Justice League of America, and expresses disgust over being made to harm Ronnie Raymond and Jason Rusch. During his first mission with the team, he is seemingly killed by Superman. The Phantom Stranger takes Batman, Katana, and Deadman to the afterlife to locate Doctor Light, but he doesn't remember anything about his death. The Phantom Stranger tells Doctor Light that he will try to free him from the afterlife, so he can be with his family. Doctor Light gives a piece of his soul to the Phantom Stranger in hopes that he can give it to his family as a final gift if he doesn't get out. It is later revealed that Atomica, who is from the alternate universe of Earth-3, is responsible for Doctor Light's death.