Codename: Kyril S01 E01 Episode 1

"A DOUBLE AGENT DISCOVERS HE'S THE FOX THAT EVERYONE IS HUNTING"

MI6 boss Michael Royston is asked over to MI5 when they became a aware of the arrest of a KGB treasurer. Victor Loshkevoi has been in the country since 1975 and the arrest was for handling stolen goods. Royston wants Sculby to infiltrate.