Somebody is stealing bicycles and cats from Abby Allen's neighborhood. Determined to solve the mystery, Abby starts her own detective agency and quickly finds herself crawling through flowerbeds, under porches, and staking out the local convenience store in the search for clues that will help her catch the thieves. In this fast paced adventure, Abby discovers solving crimes can be both exciting and dangerous. In Abby and the Bicycle Caper, Abby takes action to find a stolen bicycle and a missing Persian cat, and finds herself in trouble as the desperate criminals try to keep her from reporting the crimes to the police. Trapped by the notorious Bicycle Caper Gang, Abby must figure out how to escape before it's too late.