mystery and detective stories

The twins investigate attempts to sabotage Ashley's campaign to become the leader at a cheerleading camp.

Scooby-Doo and his friends investigate when a ghost from the Revolutionary War haunts a country fair.

Scooby-Doo investigates a ghost in farmer Fran's garden.

The twins investigate when their friends disappear on Halloween in a fun house called Creepy Castle.

Scooby-Doo investigates when all the donuts are gone from Doodles Donuts.

Scooby-Doo investigates rumors about a snow monster on the slopes at Big Pine Ski Lodge.

Scooby-Doo and his friends investigate the appearance of a ghost at a dinner party in an old castle.

Scooby-Doo investigates when a wolfman steals prized horseshoes from Lone Wolf Ranch.

In an extraordinary day at the beach, after winning a sand castle contest, two sets of twins resolve the mystery of the disappearance of a rich woman's dog.

The blatant acts of a lady swindler posing as Nancy Drew arouse the suspicion of friends and local police against the real Nancy.