Comedy legend Frankie Howerd stars as the victim of sinister shenanigans in this hilarious spoof of British horror films of the early ‘70s. Starring Hugh Burden and Oscar winner Ray Milland, and written by Terry Nation. Foster Twelvetrees, a struggling tragedian who scrapes a living by giving hammy performances from the classics, can hardly believe his luck when he’s invited to give a dramatic reading at the country home of a well-off family. Joy soon turns to outraged horror when he discovers dead bodies, foul intentions, lots of snakes and a madwoman in the attic. Can he uncover the hidden family secret before he comes to a sticky end..?
Unfortunately the movie The House in Nightmare Park is not yet available on HBO Max.
| Writing | Clive Exton | Writer |
| Directing | Peter Sykes | Director |
| Writing | Terry Nation | Writer |
| Production | Clive Exton | Producer |
| Production | Terry Nation | Producer |
| Production | Beryl Vertue | Executive Producer |
| Sound | Harry Robertson | Music |
| Camera | Ian Wilson | Director of Photography |
| Editing | Bill Blunden | Editor |
| Art | Maurice Carter | Art Direction |
| Costume & Make-Up | Judy Moorcroft | Costume Design |
| Costume & Make-Up | Jill Carpenter | Makeup Artist |
| Costume & Make-Up | Ramon Gow | Hairdresser |
| Production | Edward Joseph | Production Supervisor |
| Directing | Michael Dryhurst | Assistant Director |
| Art | Andrew Campbell | Set Decoration |
| Sound | Ken Barker | Sound Recordist |
| Sound | Rene Borisewitz | Sound Recordist |
| Camera | Neil Binney | Camera Operator |
