4 Extra Debut. Val McDermid’s adapts John Wyndham's 1953 novel of alien invasion. With the BBC Philharmonic Orchestra. Stars Tamsin Greig.

Radio reporters Mike and Phyllis Watson are drawn into the story when a Northern Lights cruise spots five fireballs landing deep in the ocean.

A terrifying modern retelling of alien invasion and global flooding.

John Wyndham's 1953 novel dramatised in two parts by Val McDermid.

Floods have recently devastated parts of Britain. But what if the flood waters never subsided? What if an apparent meteor shower was actually the invasion fleet of an alien race?

Mike Watson ...... Paul Higgins

Phyllis Watson ...... Tamsin Greig

Becker ...... Richard Harrington

Denzel ...... Richard Harrington

Dr Emma Chisholm ...... Sally Carman

Aziz ...... Abdullah Afzal

Humza ...... Abdullah Afzal

Bill ...... Gareth Cassidy

Jonah ...... Gareth Cassidy

First Minister Nicola Sturgeon ...... Nicola Sturgeon

Performed 'as live' with the BBC Philharmonic Orchestra.

Conductor: Clark Rundell.

Composer: Alan E. Williams.

Director and Producer: Justine Potter.

A Savvy production for BBC Radio 4 first broadcast in May 2016.