A chapter book for young readers, illustrated by Stephen Axelsen
"The balloon's going up, means a crook is about to pull a job," Ross tells Betty. All Betty's got to do now is figure out what the job is and when!
All sorts of balloons are going up, including her mum's wedding plans. Betty's not happy - she can't understand what her mum sees in Stencher, and then she finds out she's being sent off to boarding school . . . the balloon simply has to burst, and Betty, with a little help from her friends, is determined to teach Stencher a lesson.