Actor Christopher Lambert left a fan convention early after collapsing at the event. The incident disrupted his scheduled return to the public eye, alarming fans at one of America’s largest pop culture gatherings. Highlander star Christopher Lambert misses return after convention collapseSteel City Con in Pennsylvania announced on Facebook on August 8 that the 69-year-old actor had abruptly left due to what organizers described as a “personal issue.” TMZ later confirmed that Christopher Lambert had a medical emergency. Fans know Christopher Lambert best for wielding a katana as Connor MacLeod in Highlander.