Dr Sebastian Caine and his team develop a serum which results in complete invisibility, but Caine takes the dose only to find he can not return to his previous form, and a mixture of frustration, and the liberating power he feels swiftly escorts the good doctor down the road to psychdom. Hollowman is monsterously silly, but though it pretty much lacks any form of coherence it's certainly got pace and the special effects are suitably impressive.