by Holly Hughes (1999)
In 1860, eleven-year-old Annie, who lives at the Red Buttes Pony Express station in the Nebraska Territory, asks Pony Express rider Billy Cody to help her find the person responsible for sabatoging her favorite pony Magpie.
Stephen Mooser
Horace and Mildred Flopbottom hire the young professionals of the Treasure Hounds organization to find out where Aunt Henrietta stashed her fortune before she died. Also includes two descriptions of actual treasures which have never been found.
Gilbert Morris
Fourteen-year-old Barney and his brothers try to find the person responsible for sabotaging the circus where the boys are working for the summer.
James Howe
Not a great place to visit, and you wouldn't want to live there The Monroes have gone on vacation, leaving Harold and Chester at Chateau Bow-Wow—not exactly a four-star hotel. On the animals' very first night there, the silence is pierced by a peculiar wake-up call—an unearthly howl that makes Chester observe that the place should be called Howliday Inn. But the mysterious cries in the night (Chester is convinced there are werewolves afoot) are just the beginning of the frightening goings-on. Soon animals start disappearing, and there are whispers of murder. Is checkout time at Chateau Bow-Wow going to come earlier than Harold and Chester anticipated? ([source][1]) [1]:
Jessica Warman
Eighteen-year-old identical twins Alice and Rachel have always shared a very special bond, so when one is abducted the other uses their connection to try to locate her.