At the bottom of the sea, in the wreck of a floating radio station, a lost recording has been discovered. After careful restoration, it is played for the first time – to reveal something incredible. It is the voice of the Doctor, broadcasting from Radio Bravo in 1966. He has travelled to Earth in search of the Hush – a terrible weapon that kills, silences and devours anything that makes noise – and has tracked it to a boat crewed by a team of pirate DJs. With the help of feisty Liverpudlian Layla and some groovy pop music, he must trap the Hush and destroy it – before it can escape and destroy the world... Written specially for audio by James Goss and read by David Tennant.