In an interview with ABC News, the former teen heartthrob said, "I did 24[and] it was terrible. I hated every moment of it. Kiefer was the most unprofessional dude in the world. That's not me talking trash, I'd say it to his face. I think everyone that's worked with him has said that."
The two worked together during Prinze's season-long arc on the Fox drama in 2010. "I just wanted to quit the business after that. So, I just sort of stopped," he went on to explain. The actor continued to do some voice work before appearing on two episodes of Bones last season. He can be heard next on Disney XD's Star Wars Rebels.