When a speed ace goes missing at the famous loch, can Professor Dunning deal with the sinister forces at work?

Professor Dunning must face a prehistoric jungle, while Crowley discovers further basement terrors. Stars David Warner.

Professor Dunning's attempts to find the missing speed ace unleash terrible dangers. Stars David Warner.

Can Harry Crow defeat the devilish locals? Can Professor Dunning escape the time trap? Stars David Warner.