Liotta clarified: “Obviously, it wasn’t a real one, but it was a horse’s head. And, you know, a horse’s head means you’re toast. It turned out that his daughters sent it and said, ‘Oh, you could do this one, but you couldn’t do the one that we wanted you to?’”
Tina and Nancy never did make their miniseries about their father, however, they did end up working on the 2015 documentary Sinatra: All or Nothing.
