His treatments were only partially successful. He reappeared in a cameo appearance early in season two ("The Coming of Shadows") and returned in season three for a two-part episode ("War Without End") which closed his character's story arc. At that time, Straczynski promised O'Hare to keep his condition secret "to my grave". O'Hare told him to instead "keep the secret to "my" grave", arguing that fans deserved to eventually learn the real reason for his departure, and that his experience could raise awareness and understanding for people suffering from mental illness. He made no further appearances on "Babylon 5," but continued to support the show and appeared at conventions and signing events until his retirement from public appearances in 2000.