First broadcast: on BBC Radio 4 FMLatest broadcast: on BBC Radio 4 LW
Agents at spy agency GCHQ attempt to find the source of a sophisticated cyber-attack on the UK National Grid before blackouts throw the country into chaos. Show more
First broadcast: on BBC Radio 4 FMLatest broadcast: on BBC Radio 4 FM
Henry Morcombe and his GCHQ team discover some unpalatable truths as they get to the source of a devastating cyber-attack on the UK electricity network. Show more
