Ep 5. The Book

The show MI-5, also known as Spooks, is a British television drama that explores the work of a team of counter-terrorism spies who work for MI5. The show's fourth season, episode five, is called "The Book."

In this episode, the MI5 team becomes aware of a plot to assassinate a prominent Muslim cleric who has been critical of the government's terrorism policies. The team is tasked with tracking down the individuals responsible for the plot and preventing the assassination from taking place.

The team's investigation leads them to a radical Islamist group that has been responsible for a number of terrorist attacks in the past. Members of the group are using a book as a code for their communication and the MI5 team must decipher the code to identify the individuals involved in the assassination plot.

As the team closes in on the group, they discover that there is a mole within MI5 who has been leaking information to the terrorists. The team works to identify the mole and prevent any further leaks of information.

During the investigation, tensions rise within the team as they struggle to balance their duty to protect the public with their own personal beliefs and values. Controversial tactics are used to gather intelligence and the team must grapple with the moral implications of their actions.

As the deadline for the assassination approaches, the MI5 team races against the clock to prevent a devastating attack and bring those responsible to justice.

Overall, "The Book" is a tense and thrilling episode that showcases the MI5 team's dedication to protecting the public from the threat of terrorism. The episode raises important questions about the use of controversial tactics in intelligence gathering and the balance between national security and civil liberties.