Jurassic Park star Sir Sam Neill reveals he's cancer-free Sir Sam Neill, who played Dr. Alan Grant in Jurassic Park, has announced that he's cancer-free. 28 April 2026 Sir Sam Neill is cancer-free. Sir Sam Neill is cancer-free The 78-year-old actor - who is perhaps best known for playing Dr. Alan Grant in Jurassic Park - was diagnosed with stage 3 blood cancer four years ago, but Sam is now cancer-free thanks to an innovative form of treatment. Sam told 7News Australia: "I've been living with a particular type of lymphoma.