It a funny book at the end. I read it very quickly. (Review by 7 year old son).
My daughter a pokemon lover really enjoyed this series. Book 4-Ash has to defeat the Gym Leader Sabrina to earn a Marsh Badge. But only Ghost Pokemon are strong enough to beat her powerful Psychic Pokemon in battle. Now Ash and Pikachu have to spend a haunting night in Pokemon tower to catch a spooky specter. It won't be easy. Ghost Pokemon are tricky, but Ash isn't afriad of any ghosts. Nothing can stop him!
Ash has to defeat the gym leader sabrina to earn a Marsh badge.