The big STAR TREK LAS VEGAS convention took place last week and one of the guests was Karl Urban aka Dr. Leonard “Bones” McCoy from the current STAR TREK film franchise. He appeared on a panel to speak to audiences about everything from his upcoming role in THOR RAGNAROK to the JUDGE DREDD TV reboot to, of course, STAR TREK.

And one of the rumors he confirmed was that he was indeed not planning to return for the third STAR TREK movie (aka STAR TREK BEYOND directed by YOMYOMF Founder Justin Lin). Here’s how he described it:

There is some truth to the story. Firstly, I was a little disappointed with the lack of development with McCoy in [Star Trek Into Darkness]. So it was that. Even though I had an amazing experience working with J.J. [Abrams] and the cast, at the end of the day I didn’t have much to do. So when they came to me with the offer for [Star Trek Beyond] I was literally in the final stages of negotiating another film.

So what made him change his mind? A talk with Justin himself:

They were basically asking me to take a leap of faith with them and I was unsure. I knew that if I didn’t do it I would regret it. As I said before, it’s like family with those guys and it’s so much fun. It was really Justin Lin. We got on the phone and even though I couldn’t read a script he told me the story and when he explained the situation of Bones and Spock being shot out of the turbolift into space and crash landing on a planet and being marooned together I was like “In! I am in in a big way!”

It was sort of me letting them know I expected a somewhat higher caliber of contribution for the character of McCoy. And it prompted them to develop it more and I certainly had a great ally in [co-star and Beyond co-screenwriter] Simon Pegg.

Urban also said STAR TREK BEYOND was his favorite of the three films and that while he’d be open to returning for a fourth, he’s also “happy” if STB was the last one he appears in:

If [Star Trek] Beyond is the note that we end it on – as sad as that is – I am actually happy with that film.

To read more about the panel, click here to check out Trekmovie’s detailed recap.