It's 1991... two years after the fall of the Berlin Wall... and the spyworld is facing a radical shakeup. So, what do a pirate radio station, a long lost diary, a suspected double agent and the sudden death of Britain's best loved breakfast show DJ have to do with the London Underground and mysterious soundwaves underneath the Fitzroy Theatre? Canadian intelligence agent and television actor Evan Harris knows. And he's recruited his three sons to help him unmask the traitor deep within the British espionage community. The result is a sting operation not unlike a storyline from Evan's 1960s cult tv series, Spy Squad.

Note: Romilly Square Underground Station is entirely fictitious. Here's where it would be, if it did actually exist.