In Greece, a cult led by Baron Corofax kidnaps tourists visiting an archaeological site and murders them as sacrifices to the Devil, who has taken the form of a fire-breathing Minotaur statue.

Recognising a baby's toy as a Minoan artefact linked to human sacrifice, Roche realises that the whole village – including children – is involved in the cult.

As Corofax and the other cultists prepare to sacrifice Ian and Beth, Roche and Kaye find the students' van and use it to gatecrash the ritual, running over a hooded Vendris in the process.

The sound quality is literally a disaster and dubbing is so poorly done that even though Pleasence and Cushing are speaking English on film, their lip movements are off synch on the soundtrack!

Editing is even worse, with scene changes cutting into dialogue...Both Donald Pleasence and Peter Cushing are hideously squandered..."[7] David Miller terms the movie [a] "muddled story of ancient rites and blood sacrifice...The sound in the film is hollow and indistinct, the photography clumsy and the script feeble...far too much is made of the pagan idol, a pint-size statue of a minotaur with two gas-burners up its nose..." [though Peter Cushing] "looks formidable striding through the caves in his crimson robes.

"[8] Praising the "suffocating ambiance and dream-like atmosphere", as well as Brian Eno's electronic score, Chris Alexander argues that the movie is underrated: "Make no mistake, it's a lowbrow exploitation film, but it's one that’s filtered through a very stylised art house sensibility.