Mulder is approached by a former love interest, Scotland Yard Inspector Phoebe Green, who needs help on a case. To date, three British politicians have spontaneously combusted, burning to a crisp. There has been no trace of accelerant being used and little to connect the three deaths. Green is in the U.S. providing security to Sir Michael Marsden and his family and wants to make sure nothing happens to him while he is visiting. Mulder tells Scully that he wants to take care of this himself - somewhat to her annoyance - but she eventually finds crucial evidence that leads the to the killer.