Simplify the following text for a Grade 5 native English-speaking person.
Original: In accordance with the private way in which Crichton lived his life , his battle with throat cancer was not made public until his death . According to Crichton 's brother Douglas , Crichton was diagnosed with lymphoma in early 2008 .
Simplified: Crichton is well known for Jurassic Park , a book that became a film series .