Watch Fiend (1980) HD Full Movie Free on SolarMovie. Watch Fiend (1980) online free. An evil spirit Possesses the corpse of a diseased man. It must absorb the life energy of the living,...An evil spirit Possesses the corpse of a diseased man. It must absorb the life energy of the living, in order for the corpse to not rot away. It moves to the suburbs, where, a neighbor begins to suspect something isn't right.