When his father's loyal housekeeper goes missing thirteen-year-old Darkus, an extraordinary crimesolver, his father, Alan, and stepsister, Tilly, go to Las Vegas where they again face the Combination criminal organization.
Sunny's humanity puts her out of the running when the Blood Coven decides her vampire boyfriend Magnus needs a mate to be his co-ruler, but she is suspicious of the chosen candidate Jane Johnson, a supposed Rhodes scholar who does not seem too bright, and when the vampires convene in Las Vegas for the bonding ceremony, Sunny and her twin sister secretly follow.
When teen sleuth Sammy Keyes travels to Las Vegas to stop her mom from marrying her boyfriend's dad, she never expects she'll learn the identity of her absent father in the process.
When her spring break plans are ruined, Hannah embarks on a road trip to Vegas to meet an online friend she's never met but with whom she has been communicating since she was in eighth grade, in order to declare her feelings for him.
As the first anniversary of her best friend Kim's death nears, fourteen-year-old Emmy tries to fulfill her promise to make contact with Kim's spirit, but she gains new perspective from unexpected connections.
When Leo's flighty sister Paris leaves her at the Heartbreak Hotel Diner in Las Vegas with a cryptic note, Leo sets out in search of Paris with the help of a physics student named Max.
