Ep 3. Who Guards the Guards?

In MI-5 season 3 episode 3, titled "Who Guards the Guards?", the team is investigating the suspicious death of a Russian diplomat, which has caused tension between Russia and the UK. As MI-5 tries to uncover the truth behind the diplomat's death, they find themselves caught in a web of conspiracies and lies.

Meanwhile, Zoe is tasked with playing a dangerous game of cat and mouse as she goes undercover to infiltrate a group of anti-government extremists. As Zoe gets closer to the group, she discovers their plans to carry out a deadly attack in the heart of London. With time running out, Zoe must race against the clock to prevent the attack and maintain her cover.

As the two investigations come together, MI-5 discovers a shocking truth behind the diplomat's death and the extremist group's plans, and they must use all of their resources to stop an even greater threat to national security. With high stakes and intense action, "Who Guards the Guards?" delivers an edge-of-your-seat thriller that keeps you guessing until the very end.