Special Branch Season 4 Episode release dates & where to watch

1. Double Exposure

Craven and Haggerty are assigned to investigate if a photographer is a threat to national security.

2. Catherine the Great

The team are on the trail of Rehfuss - a deadly assassin who has managed to get into the country.

3. Jailbait

Craven and Haggerty are hot on the trail of a traitor has broken out from prison.

4. Stand and Deliver

An experimental weapon is stolen from a military research facility, but the thieves are unaware the weapon is unstable.

5. Something about a Soldier

Tensions run high as Craven and Haggerty investigate two army officers.

6. Rendezvous

Craven provides security for the debriefing of a captured KGB agent.

7. Sounds Sinister

Craven and Haggerty investigate the broadcasting of compromising information about public figures on a pirate radio station.

8. Entente Cordiale

Craven is appalled to find himself implicated in his ex-wife's terrorist activities.

9. Date of Birth

Craven must unravel the connection between a recently-killed spy and an au pair.

10. Intercept

Craven has to investigate a morally dubious but strategically important foreign VIP who has been robbed of a fortune in diamonds.

11. Alien

A German student revolutionary has been allowed into Britain under the strict condition that he does nothing political. Craven and Haggerty are made to ensure that he sticks to the terms of his deal.

12. Diversion

Is Strand's erratic behaviour a result of the pressure he is under or is he playing a much more dangerous game?

13. Downwind of Angels Finale

Craven and Haggerty are working against the clock to find a gunman stalking the London streets.