Celebrated speed ace Sir Malcolm Campbell (Alex Lowe) is carrying out speed trials on Loch Ness when a bank of fog suddenly descends. When it lifts, Sir Malcolm and his boat have mysteriously vanished...

MI:13¹s Harry Crow (David Warner) and Professor Dunning (Terry Molloy) are soon shaking up the sleepy loch-side village of Inverfarigaig. Aided by kindly local GP Dr Pippin (Philip Madoc), they discover a connection to the erstwhile Laird of Boleskine and Abertarff - occultist, bon viveur and occasional nudist Aleister Crowley (David Benson).

Crow and Dunning swiftly realise that there¹s more to Inverfarigaig than meets the eye: fraudulent Nessie hunters, demonic bed sheets, Caledonian witches and things that go bump in the night. Joined by Crowley, their investigations into Sir Malcolm¹s disappearance will lead them into terrible danger, as an old foe threatens to unleash... THE HORROR OF LOCH NESS.