“John Henry Matthew Reilly AKA Jack. The brightest light in the world has gone out. Imagine the best person in the world. Now imagine that person being your dad. I’m so grateful he was mine. I’m so grateful I got to love him. I’m so grateful I made it in time to hold him and say goodbye,” Caitlin wrote in the caption of a photo of her and her dad. “I honestly don’t know what I’m going to do, but I know he’ll be with me. I love you forever Daddy.”
John began a prolific TV career in the ’70s, where he guest starred on shows like The Mary Tyler Moore Show, Wonder Woman and How the West Was Won. Beginning in 1984, he starred on General Hospital as WSB agent Sean Donely. In 1994, he left the show after choosing not to renew his contract, according to People.