Remember

Remember is a 2015 drama thriller film directed by Atom Egoyan and written by Benjamin August. Starring Christopher Plummer, Bruno Ganz, Jürgen Prochnow, Heinz Lieven, Henry Czerny, Dean Norris and Martin Landau, it was a co-production of Canada and Germany. The plot follows an elderly Holocaust survivor with dementia who sets out to kill a Nazi war criminal in retaliation for the death of his family and was inspired by August's consideration that there were fewer parts for senior actors in recent years.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.