Don’t panic! The Hitchhiker’s saga returns once again with a full-cast dramatisation of Mostly Harmless, the fifth book in Douglas Adams’s famous ‘trilogy in five parts’.

While frequent flyer Arthur Dent searches the universe for his lost love, Ford Prefect discovers a disturbing blast from the past at The Hitchhiker’s Guide HQ. Meanwhile, on one of many versions of Earth, a blonder, more American Trillian gets tangled up with a party of lost aliens having an identity crisis. And just when Arthur thinks he has found his true vocation on the backwater planet of Lamuella, the original Trillian turns up with more than a little spanner in the works. A stolen ship, a dramatic stampede and a new and sinister Guide lead to a race to save the Earth...again. But this time, will they succeed?

Simon Jones returns as Arthur, Geoffrey McGivern as Ford, Mark Wing-Davey as Zaphod Beeblebrox, Susan Sheridan as Trillian, Sandra Dickinson as Tricia McMillan, and Stephen Moore as Marvin. William Franklyn is the Book, Rula Lenska is also the Book and Samantha Béart is Random. Guest stars include Miriam Margolyes, Griff Rhys Jones, John Challis, Roy Hudd, Saeed Jaffrey, and Jonathan Pryce.

This extended edition features 40 minutes of material not heard on BBC Radio 4.

Want to learn more about the new Hitchhiker's Guide to the Galaxy movie? Listen to this interview with Robbie Stamp, close friend of Douglas Adams and executive producer of the film.