1/4 When a speed ace goes missing, can Professor Dunning handle the sinister forces at work?
BBC Radio 4 Extra
2/4 Professor Dunning's attempts to find the missing speed ace unleash terrible dangers.
3/4 Professor Dunning must face a prehistoric jungle, while Crowley discovers further terrors.
4/4 Can Harry Crow defeat the devilish locals? Can Professor Dunning escape the time trap?
The daughter of a millionaire is abducted and held against her will by two ex-convicts.
Alice moves into a new flat. Her landlord Martin lives below. Neither are what they seem.