Criminologist and occult expert Sebastian (Robert Culp) and his friend Dr Hamilton (Gig Young) are hired by the rich Cyon family in England to investigate if Sir Geoffrey (James Villiers) has been possessed by demonic forces! Even before Sebastian leaves his home he is attacked by a demon, his flight over to the UK nearly crashes, this indicates that something is amiss!
Sir Geoffrey is sceptical about this though his sister Anitra (Ann Bell) and brother Mitri (John Hurt) are keen for Sebastian and Hamilton to continue. They discover an underground temple dedicated to the demon Asmodeus, later they also witness an energetic ritual. The true identity of the demon is quite a surprise...
This is a fun film though not without some flaws though this did start life as a TV pilot and was made into a feature film (with extra pagan nudity natch).
