"Monster In A Box"
In an effort to rid his body of the Lilin parasite, Morbius undergoes an experimental treatment. The treatment works in getting the parasite out but inadvertently creates a new creature, Bloodthirst. Bloodthirst goes after Morbius and nearly kills everyone close to Morbius but Morbius is too smart for Bloodthirst and defeats him in the end. Meanwhile, Agent Simon Stroud plots his escape from the mental institution in order to get even with Morbius.