The Man from 'X' Department S : Season 2 Episode 6

Safe-cracker James Rankin dies,wearing the space-suit he stole from as aerospace institute in Farnham. Jason finds out from his sister Leila that he was about to take part in the robbery of a safe with a magnetic combination. Posing as Rankin's replacement Jason makes contact with the gang and finds that they are planning to steal two million pounds' worth of diamonds which are being kept in a safe in the sub-zero vacuum of a frozen foods factory.