Marty gets the "Stirring" an affliction resulting when the first moon rays in the fourth quarter touches the coffin of a Vampire, resulting in Marty regressing to the primal urges of being a Vampire the very thing the experiment wants to prevent

Karl suffers what the Vampire's would call the "Chill", when a Vampire gets the urge to return to his former life.

This is what I would call a perfect teacher

A group of young vampires are brought to a boarding school so they can be integrated into human society. Drew, a vampire, forms a psychic bond with Sherry, a human.