Jailbird — Eileen Goudge

In the heart-stopping series finale from the author of If Looks Could Kill, a new festival queen is crowned, putting her in the crosshairs of a killer.
 
With a suspect who has confessed to the murder of the Peach Blossom Queen behind bars, the cloud over Paradiso, California, has lifted. Along with everyone else, high school senior and part-time sleuth Hope Hubbard is relieved to move on from the tragedy and flurry of false accusations.
 
When the new Peach Blossom Queen is announced, the longshot winner realizes that it's no fun being celebrated by the town when someone you've known your whole life is behind bars. Especially when a series of dangerous mishaps have her convinced that the wrong person has been arrested -- and she could be  the next victim. There's only one person who can help: Hope.
 
For Hope, starting up her investigation again would be a pain -- and possibly even deadly. But a plan starts to take shape. A trap is sprung. And who it catches will surprise everyone . . .