When Detective Rick Zengo is assigned to protect a Kalamazoo City mayoral candidate, he struggles to investigate mysterious threats without the help of his partner, O'Malley, who has been assigned to work with rookie Jo Cooper.

Nancy and her father Carson find themselves in an ancient city long buried below a luxurious estate, the sale of which has brought them to Turkey. Thieves led by a mysterious rich man named Harold Severino search frantically for a priceless artifact somewhere in the city as Nancy and her father are taken prisoner. Severino, who previously attempted to purchase the estate with suspicious motives, has been led to the archeological treasure by none other...

Thirteen-year-old genius and undercover agent Ruby Redfort finds herself dealing with poisonous rumors floating around the community of Twinford that compel her to brush up on her martial arts skills.

A top-secret computer chip has been stolen from Rackham Industries and a mysterious charm bracelet is mailed to Nancy. And each charm represents a different crime. Can Nancy, with help from Bess and George, deal with River Heights' latest crime spree and her romantic crisis at the same time?

It began here as Nancy Drew set off to find a long-lost engine that can get 200 miles per gallon! It ends here -- in a race to win a government contract to mass-produce a new fuel-efficient car. But someone isdetermined that Nancy must lose - at any cost!--P. [4] of cover.