Where to Watch Red (2008)

They should have told the truth...

Avery, a reclusive older man, has a best friend in his dog, Red. When three teens kill Red without reason, Avery sets out for justice and redemption, attempting to follow the letter of the law. But when the law fails him, and the boys' father clearly defines right and wrong in his own way, Avery must avenge himself by any means possible.