Spooks - Season 2 - Eps 5: I Spy Apocalypse
Tom's skills as leader are tested to their extremes when they take part in an Extreme Emergency Response Initiative Exercise (EERIE) to test their response to nuclear, chemical or biological act in central London, but when the power in the grid is cut and Harry starts to feel ill, they soon begin to suspect it's for real.
About Spooks

Title: Spooks
First Air Date: 2002-05-13
Last Air Date: 2011-10-23
Status: Ended
Rating: 7.6/10 (from 126 votes)
Language: EN
Seasons: 10
Total Episodes: 86
Network: BBC One
Genres: Drama, Action & Adventure, Crime
Production Companies: BBC, Kudos
Synopsis
Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a highly secure suite of offices known as The Grid.
Cast

Peter Firth
Harry Pearce

Nicola Walker
Ruth Evershed

Max Brown
Dimitri Levendis

Lara Pulver
Erin Watts

William Hope
Jim Coaver

Alex Lanipekun
Ben Kaplan

Geoffrey Streatfeild
Calum Reed

Tom Weston-Jones
Sasha Gavrik

Alice Krige
Elena Gavrik

Jonathan Hyde
Ilya Gavrik