The Mystery of the Masked Rider

Plot summary

Revenge rides a dark horse - and Nancy's the target! Nancy is going to visit one of her best friends, Colleen, who is horse crazy and has her own horses. With one of the best of them, Nightingale, she is going to race in the Midwest International Horse Show. The prize-winning filly is worth a cool $200,000 and that kind of cash can breed plenty of greed, ambition and danger. Soon Nancy has her hands full trying to stop the mysterious culprit, the Masked Rider, who wants to kill Nightingale.