 In this third in the Lassie film series, the famed collie plays the mother and her grown son, Bill. After being abandoned in the north woods as a pup,Bill is accidentally shot, but is found by a girl who nurses him back to health and adopts him. A tragic accident causes him to be separated from her and he eventually winds up as a war dog. Somehow making it back home, his wartime experiences changes him into a battle-scarred veteran whose killing spree leads to his accusation of being a dangerous dog and facing the death sentence for his crimes.Dale Roloff