Ned's weekend alone with Nancy in the French countryside is ruined when he becomes involved with a young Frenchman who is being pursued by two Russian mobsters because of a stolen religious artifact.

Ned saving a beautiful Parisian model from being run over by a speeding car starts the sleuths on the trail of a high-fashion protection racket involving the mob.

Bess thinks she is being harassed by a stalker because of something she wrote in her newspaper advice column.

In Paris, Nancy and her friends help a photographer whose gallery received a bomb threat after he accidentally captured something on film that he shouldn't have.

While the girls are vacationing in France, a mysterious woman at the side of the road prompts them to investigate a chateau rumored to be haunted by a heartbroken ghost.

When George loses a videotape she is supposed to deliver for a young director, Nancy discovers it is part of a movie-pirating scheme.

Making a documentary on a rock star who committed suicide five years ago, George thinks she sees his ghost.

Trying to help George's prospective new beau escape a marriage arranged by his parents, Nancy uncovers a marriage-brokerage scam.

Nancy and Ned try to track down a man who is literally throwing money away from rooftops after covering it with cryptic lines of poetry.

Helping George with a video story about an abandoned psychiatric hospital, Nancy and Bess end up wandering the spooky halls looking for a hidden treasure along with with a journalist and a former patient.

The mysterious disappearance of Nancy's professor appears to be related to the forthcoming arrival of a renowned Asian religious leader.

Nancy's old boyfriend Ned comes back from Africa with a present for her 21st birthday, but on the way from the airport he is assaulted by a mysterious skinhead who turns out to be a jewel smuggler.

Taking an apartment at the Callisto for the new school year, Nancy ends up searching for the man who ran away with no explanation after almost getting hit by her car.