An astronaut gets infected with alien DNA during the first mission on Mars and runs amok on earth. Preston and Laura team up with a peaceful, genetically re-engineered Sil to track the monster down.

A group of scientists try to track down and trap a killer alien seductress before she successfully mates with a human.

Teenager Jesse becomes reunited with Willy two years after the whale’s jump to freedom as the teenager tries to rescue the killer whale and other orcas from an oil spill.

A huge man-eating crocodile terrorizes people near Krabi, Thailand. A hunter stalks the beast, while a local tries to blame a foreign crocodile-farm owner for the crocodile’s rampage.

When a boy learns that a beloved killer whale is to be killed by the aquarium owners, the boy risks everything to free the whale.