Sam Burke buys a savage German Shepherd named Bismarck after a bobcat depredates his flock of sheep and attacks the Martin stock as well, leaving a lamb orphaned--but Lassie knows that something else was responsible for the killings.
| Creator | Robert Maxwell |
|---|---|
| Actor | Hugh Reilly, Josh Albee, Larry Pennell |
| Country | United States of America |
| Production |