Elsa, Haley, Megan, and Abby are typical eleven-year old girls who love sleepovers, music, and friends. When an unexpected ghostly guest, Mercy Aldridge, comes to Haley's birthday party, they find out that they also like a good mystery, no matter where, or when, it takes them.A tale of friendship, mystery, and the mystical, this first installment in the Ghost Club series illustrates what four enterprising girls can do when they decide to take on both the normal, and the paranormal, world.