Other editions of book New Adventures of Mary-Kate & Ashley #46: The Case of the Unicorn Mystery:

In Mary-Kate and Ashley's most unusual case yet, thier number once suspect is a unicorn! But that's impossible. Unicorns don't exist. All the Trenchcoat Twins know is that someone -- or something -- has destroyed thier friend Lindsay's picture-perfect tulips for the upcoming flower show and all clues point to a live unicorn!