For the first time, see Katie's 21st through 24th mysteries together in one volume, along with a special never-before-published short story! First, in the Return of the Vampire, a former nemesis returns to menace Katie and take the blood of more victims. Then, in the Case of the Haunted Ski Lodge, a ski trip leads Katie and her brother Carl to investigate a haunting on a mountainside. Next, in the Case of the Cosplay Caper, someone is trying to sabotage a local convention, and Katie has to find them before the whole event is shut down. Finally, in the Mystery of the Missing Wedding Gifts, Carol has married her fiance Peter, but the wedding gifts have gone missing, and the clues seem to be indicating an old foe of Katie is behind it all. And lastly, in Jamie and the Case of the Kase Case, Katie's lawyer father investigates a mystery of his own when one of his cases takes him to the site of a family feud that may turn deadly!