Bernard Newman is invited by an old friend, Nicholas Prince, to attend the Cup Final at Wembly Stadium. Neither expected to be through into a murder investigation. Prince is actually a former Russian Prince now an American citizen now a high ranking part of the FBI. The murder involves the death of a bookmaker of apparent natural causes but Prince recognizes the clever method of murder used and now it is up to he and Newman to unearth the killer.
Being on his home turf, Marshall plays a major role in this adventures. He has again been promoted, now being a Superintendent in the C.I.D. having left the Special Branch.