The stage is set for mystery when Nancy and her friends decide to produce a 20 year old play in order to raise money for a youth center. The play is to be presented at the allegedly haunted Palace Theatre. When members of the original cast arrive in town, strange events begin to occur both onstage and off. Nancy must figure out why the actors have come together to appear in her modest production, or the drama might just end in real life tragedy.

Nancy and the brothers team up to find Fenton Hardy, who disappeared while investigating a series of European art thefts.

Allison Troy's Transylvanian rock concert has locals fearing a reawakening of their most notorious denizen.

Nancy and famous criminologist Arlo Wetherly find mutilated photos of themselves.

Frank & Joe team up with Nancy Drew again in Los Angeles to attend the 14th Annual Detectives' Convention at a TV & movie studio. Joe pursues an illusory figure through the back lot of the studio's stage 24.

A deaf woman witnesses a terrorist negotiating plans on the telephone.

Nancy is determined to restore the honor of a dear old gentleman who claims to be Santa Claus when he is accused of burglary.

While aboard a ski train to Austria, a frightened girl fleeing unknown assailants switches flight bags with Nancy.

After Joe Hardy's fiancée is killed by a hit-and-run driver, the FBI won't let the police arrest the man until their own case against him is finished. Joe takes the law into his own hands and goes undercover as a rich gambler with underworld connections.

Joe Hardy is still haunted by memories of his dead fiancee, but has to focus his mind on the case when Jocco's girlfriend overhears him talking to the police on the phone. Meanwhile, Frank Hardy tries to help Joe by going undercover too, but Jocco finds out and traps Frank in a shark-infested area.

Frank and Joe Hardy journey from the South of France to the Caribbean to find a girl who disappeared while hunting for pirate treasure.

Frank and Joe Hardy are assigned to go to Puerto Rico to protect a senator's daughter from an international blackmailer known as the Scorpion.