FollowingtheconvictionofsomeofthoseinvolvedinthetheftandhandlingoftheBrink’s-Matgold,thepolicerealisedthatthosecriminalsonlyeverhadhalfofit.Seriestwoexploreswhathappenedtotheotherhalf,andthecriminalfortuneitcreated.Asthepoliceinvestigationcontinues,itbecomesatense,high-stakesjourneyintointernationalmoneylaunderingandorganisedcrime,whilethepoliceembarkondramaticmanhuntsastheydesperatelytrytosolvethelongestandmostexpensiveinvestigationinthehistoryoftheMetropolitanPolice.