The Mystery of Masked Rider is a book of the Nancy Drew

Nancy Drew

Nancy Drew is a fictional young amateur detective in various mystery series for all ages. She was created by Edward Stratemeyer, founder of the Stratemeyer Syndicate book packaging firm. The character first appeared in 1930. The books have been ghostwritten by a number of authors and are published...

series about the teenage girl-detective.

Plot summary

Nancy is going to visit one of her best friends, Colleen. Colleen is horse crazy and has her own horses. With one of them, Nightingale, she is going to race and win money at the Worrington Cup, but there is a mystery. Someone wants to kill Nightingale
and Nancy is going to uncover this Masked Rider.