An angry Kelsey Gammer walked out on Piers Morgan just minutes before he was scheduled to appear live on the CNN show.

“Kelsey Grammer was due to be on by now, but he appears to have left the building,” said Morgan live on his show on Wednesday night.

So why did he bolt?

Apparently Grammer saw a photo of his ex-wife Camille during the beginning of the show, and decided he was out of there.  

Morgan tweeted, "I like Kelsey Grammer personally, but this was a shockingly unprofessional thing to do. I wasn't even going to mention his ex-wife!"

A rep for Grammer told INSIDE EDITION, "Piers needs to take responsibility for what he did to Kelsey. It's called accountability."