"It was a quick little cameo, it was in a casino, it was the thrill of a lifetime... She said, 'Now you call the showrunner, I've thought of some storylines that could bring us back.' And she goes, 'You don't understand, I have to tell everyone about it now and everyone wants to talk to me...' She's totally bitten by the bug, but she's fine. It was a great thrill for all of the mums." Chris O'Donnell's mother is badgering her actor son to find a way to bring her back on his U.S. Tv cop drama Ncis: Los Angeles after landing a small role on the show alongside three other castmembers' mums in September (12).