A man in a spacesuit drops dead in the middle of a street in London. The authorities are baffled - where did he come from, and why was he in a spacesuit? So the case is handed over to the Department.In tracking down the origins of the spacesuit, Annabelle's research leads them to an institute running a space program, therefore they ordered eight suits from NASA. Stewart goes to the institute, finds the manager uncooperative, snoops around himself and discovers that four of the spacesuits are missing. In the meantime, his car is being manipulated, so on the way back, when the car crashes, he barely can throw himself out of the car before it explodes. Unconscious in the hospital, he has no way of sharing his discoveries...Meanwhile Jason has tracked down the dead man's sister. Since he deceased was a professional safecracker, Jason poses as a safecracker himself, trying to set himself up as the dead man's replacement. When the gangsters take the bait, things go wrong when they spot Annabelle, who was supposed to follow them... That leaves Jason alone with the gangsters and Annabelle and Stewart, who has discharged himself from the hospital, with little time to find him and prevent the coup the gangsters are planning...