Producers Marshall and Kennedy Say No to Jurassic Park 4 According to producers Frank Marshall and Kathleen Kennedy plans have fallen through for a fourth entry in the “Jurassic Park” franchise. When asked if there was any development on the long-anticipated sequel, Kennedy responded, “No… I don’t know. You know, when Crichton passed away, I sorta felt maybe that’s it. Maybe that’s a sign that we don’t mess with it.” Since Joe Johnston’s Jurassic Park III in 2001, Universal (US) has been developing a fourth outing in the successful franchise. The studio commissioned William Monahan and John Sayles to pen a script in ’04.