FBI Assistant Director Walter Skinner is the prime suspect in a homicide involving a woman he was with the night of her death. Mulder and Scully are all he has to prove his innocence, as superior officers try to shut him down and the only clue is a mysterious old woman.
A diverse group of tourists on an organized trip to Lisbon find themselves investigating a murder after one of them is killed on the first morning. Set out to find the killer among the group as they visit beautiful Lisbon sites.