Henry Ian Cusick on MacGyver Debut: "I've Never Had More Fun With a Role" By Matt Webb Mitovich / February 5 2020 Mac is back this Friday, and he’s acquired a new frenemy, played by Lost alum Henry Ian Cusick. This Friday at 8/7c, the Peruvian-born Scot joins CBS’ MacGyver for Season 4 as Russ Taylor, an MI6 agent-turned-private military contractor who recruits former members of