He had been battling cancer. Julian McMahon was the original lead on FBI: Most Wanted's first three seasons.

https://deadline.com/2025/07/julian-mcmahon-dead-1236449999/

Julian McMahon's 8 Best Episodes As Jess LaCroix In FBI: Most Wanted, Ranked (https://screenrant.com/fbi-most-wanted-episodes-highlights-julian-mcmahons-jess-lacroix/)

Late FBI: Most Wanted (https://screenrant.com/db/tv-show/fbi-most-wanted/) actor Julian McMahon had many strong episodes during his three-year run as Jess LaCroix, but several stand out from the rest.

Very sad :(

Julian McMahon's cause of death revealed (https://people.com/julian-mcmahon-cause-of-death-revealed-exclusive-11769235)

The Nip/Tuck and Charmed star died last week at age 56 from lung metastasis as a result of head and neck metastatic cancer, according to a cremation report obtained by People magazine, which adds: "The manner of death was ruled as natural, and McMahon's remains have since been cremated."

:(:(