Based on the novel written by Robert Kimmel Smith. "The War With Grandpa” stars Robert DeNiro, Uma Thurman, Rob Riggle, Oakes Fegley, and Christopher Walken. Directed by Tom Hill and the screenplay was written by Tom J. Astle and Matt Ember. ...

The War with Grandpa is based on the novel of the same name written by Robert Kimmel Smith. The film stars Robert DeNiro, Uma Thurman, Rob Riggle, Oakes Fegley, and Christopher Walken.  Peter (Oakes Fegley) and his Grandpa Jack (Robert DeNiro) used ...

Stand a chance to win yourself a pair of Complimentary Passes to the family comedy film The War with Grandpa! Simply answer the following question: Who plays the titular grandpa in the movie?