Smallville: Season 4, Episode 14

4 - 14: Krypto

While driving, Lois accidentally hits a dog and brings it back to the farm to heal. Clark realizes this is no ordinary dog after the pup lifts up a car to retrieve a ball. Clark and Lois learn the dog is a product of an aborted LuthorCorp experiment and is being used to commit crimes, but when Lois is kidnapped by the robbers and Clark is weakened by kryptonite, it is up to the dog to save them. Meanwhile, Lana questions Jason's involvement in his mother's schemes...