We hope you enjoyed The Zygon Inversion. But if you think you've seen the last of the deadly shape-shifters – think again! Big Finish are pleased to bring you three more tales of the orange invaders, for only £5 each on both CD and Download.

The terror begins with Doctor Who: The Zygon Who Fell to Earth by Paul Magrs. The Eighth Doctor (Paul McGann) and Lucie Miller (Sheridan Smith) pay a visit to the Lake District in the 1980's – where Lucie's Auntie Pat (Lynsey Hardwick) is having problems with her new husband.

Then at Christmas 2009 the Doctor and Lucie's journeys face an abrupt end, when the Zygons return for Doctor Who: Death in Blackpool by Alan Barnes. This festive tale also features the dreaded Zygon subspecies, the Zynogs!

Finally, on the jungle planet Garros in the far future, the Solar Knights invite the Fourth Doctor (Tom Baker) and Leela (Louise Jameson) on the hunt of a lifetime in Doctor Who: Zygon Hunt by Nicholas Briggs.

You can order these titles for just £5 each on both CD and Download – but hurry, offers must end Noon Monday the 9th of November.

The Zygon's TV opponents will also be returning soon, as Kate Stewart (Jemma Redgrave) and Petronella Osgood (Ingrid Oliver) deploy for battle against the Nestene Consciousness in UNIT: Extinction – the first Big Finish box set from the New Series of Doctor Who. Pre-order today for just £20 on both CD and Download and check out exclusive new video trailer below!

Join us next week for a found footage nightmare with Mark Gatiss' Sleep No More.