The Rat

Frustrated by his wife’s love for a fellow researcher and disappointed by a decision of his supervisor, scientist Wayne Chaney seems to be going out of his mind. He helped develop the world’s most intelligent rat, which should have given him the boost needed for another project. When his superior Dr. Morton is found dead because of a bite by a Rattus Norvegicus, no one can figure out how the rat named Attila managed to escape from its cage. Was it due to Attila’s superior intelligence, or did the rat have a little help from Chaney?

Enraged by the faithlessness of his wife, a genius scientist creates a highly-evolved rodent and sends it to attack his wife's lover.

A brilliant scientist discovers his wife is cheating on him, so he creates a super-smart rat and uses it to hunt down the man she's having an affair with.