Donald Bellisario is partially to thank for the iconic crime drama NCIS . A spin-off from the 1990s show JAG, NCIS comes from the minds of Donald and Don McGill. Donald was the showrunner of NCIS for four seasons before he departed.

He reportedly left because he feuded with NCIS star Mark Hamon, who has been with the franchise since its debut. Donald and Mark allegedly butted heads because the leading actor had become upset over the series creator’s “chaotic management style.” According to TV Guide, Mark worked 16 hours day each day, and during that time Don attempted to overly manage everything.

NCIS: Origins Mariel Molino says Lala’s connection with Gibbs deepens 'and it starts to get scary' NCIS fans shocked as they spot Mrs Doubtfire and Disney channel star all grown up in latest episode NCIS: Tony and Ziva fans notice star missing from 'behind-the-scenes pic' as they beg for 'mini-spoiler Any changes to the script were faxed to the NCIS set last minute, which Mark eventually grew tired of. Executive producer Charles Floyd Johnson later addressed Donald’s way of running the show, saying in an interview that “It was a very complicated show in the beginning.” Although Charles explained that Mark didn’t say “Get rid of Don” verbatim, despite Donald’s vision being taxing on him, he did tell the showrunner to “work from a distance.

” The network winded up going to Donald and telling him, “Maybe you should work from a distance from it and not be quite.