Originally produced by BBC Scotland and aired on BBC One, The Omega Factor scared viewers in 1979 and attracted criticism from famed moralist Mary Whitehouse for its sheer levels of terror. Big Finish has been carrying on the adventures since 2015 bringing The Omega Factor to the 21st century.

Over thirty years have passed since Tom Crane left Department 7, a top secret organisation that investigates the paranormal. Anne Reynolds now runs the operation, and for three decades their enigmatic nemesis Omega has been silent. But that peace is about to be shattered.

Following the release of The Omega Factor Series Three, we have these very special offers.

From now until Thursday 22nd March, midday UK time, you can get Series One and Series Two of The Omega Factor at £20 on CD or £18 on download. Don’t forget that all CD purchases unlock a download option from the Big Finish website and the Big Finish app.

And you can also pick up the audiobook novelisation of The Omega Factor, read by Louise Jameson, at the special offer price of £15 on CD and £12 on download.

Or you could save even more money with a bundle. Get the complete The Omega Factor collection at £72 on CD or £55 on download.