Indiana Jones and the Kingdom of the Crystal Skull is a 2008 American action adventure film directed by Steven Spielberg from a screenplay by David Koepp, based on a story by George Lucas and Jeff Nathanson. It is the fourth installment in the Indiana Jones film series and a sequel to Indiana Jones and the Last Crusade (1989). Set in 1957, it pits Indiana Jones against Soviet KGB agents led by Irina Spalko searching for a telepathic crystal skull located in Peru. Jones is aided by his former lover, Marion Ravenwood, and their son, Mutt Williams. Ray Winstone, John Hurt, and Jim Broadbent are also part of the supporting cast.

David Koepp is an American screenwriter and director. He is the ninth most successful screenwriter of all time in terms of U.S. box office receipts with a total gross of over $2.3 billion. Koepp has achieved both critical and commercial success in a wide variety of genres: thriller, science fiction, comedy, action, drama, crime, superhero, horror, adventure, and fantasy.