MISSING! 
Susan can't wait to start the best job ever: exercising the ponies at Funland, the local amusement park. Riding the little Shetlands is the perfect way to spend a Saturday morning. 
But when a beautiful red pony appears in the park, Susan's dream job turns into a real-life mystery. Funland doesn't have any red ponies. So where did this one come from? Before Susan has time to find out, the pony disappears. With the help of her friend Kent, Susan searches the park inch by inch, and each clue leads her closer to the Tunnel of Terror. Can she brave its pitch-dark passageways and gruesome surprises to save the day--and her pretty phantom pony?