Dah dah dah dah dah dahh Dah dah dah dah dahhhh...

It's 1952. Of course.

As Churchill's squadron of bagpiping bombers grows closer, our intrepid crew and their duplicates face the diabolical traps of the Alien ziggurat.

Meanwhile, Jenkins races back to the laboratory to secure the cellar, and uncovers a duplicate Quanderhorn, who claims he's the real thing.

Barely surviving the Deadly Duck Trap, the Waterfall of Glue and the Collapsing Stairway of Strangling Vines, Brian and the originals face the ultimate challenge - the Mirror Maze of Laser Death.

The duplicates reach the prize, the legendary Gaulus Tempus - the Time Bucket - but they are immediately betrayed by Guuuurk 2 who claims it for Mars.

Can Gemma, Troy, Guuuurk and Brian triumph and use the Time Bucket to save reality before the bombers strike and the bagpipers strike up Ride of the Valkyries?

The Quanderhorn Xperimentations - an adventure beyond human understanding.

Professor Quanderhorn ...... James Fleet
Brian Nylon ...... Ryan Sampson
Dr Gemini Janussen ...... Cassie Layton
Guuuurk ...... Kevin Eldon
Troy Quanderhorn ...... Freddie Fox
Winston Churchill/Jenkins ...... John Sessions
Synthetic Voice ...... Rachel Atkins

Created and written by Rob Grant and Andrew Marshall

Directed by Andrew Marshall

Music by Peter Brewis

Engineered, Edited and Sound designed by Alistair McGregor

Production Manager: Sarah Tombling

Produced by Rob Grant and Gordon Kennedy

Recorded at The Soundhouse Studios

An Absolutely production for BBC Radio 4, first broadcast in July 2018.