"There's your monster maker… Caught in the act."

And lo… Barry Letts did advance upon him, spitting tacks and brandishing a rubber T-Rex, with insertion on his mind.

Yes, this is yer actual Invasion of the Dinosaurs – a tale of double talk, double-crosses and double denim.

The Doctor drives stuff, Sarah discovers stuff and Yates says "Stuff you!" to his UNIT family (and to everyone outside the central London elite bubble).

Have the cast been selectively aged and rejuvenated by Whitaker's time experiments?

Is the science as shaky as the Whitehall walls? And is it worth gambling your house on?

Will Lis Sladen ever get the underwear she doesn't need?

And where will Jim and Martin place the story on a scale of Jurassic Park to The Goodies?

To find out the answers to some or none of these questions, listen here.