The haunted library – The lost ghost

Kaz isn't an ordinary boy – he's a ghost. He isn't very good at walking through walls, but he's excellent at squeezing through keyholes. One day, a strong gust of wind blows Kaz far away from his family. It carries him to a distant library, where he meets Klara – a little girl who is the only one who can see him! Klara wants to be a detective, so she promises to help Kaz search for his parents. They find a clue right there in the library. A few days ago, a spooky wailing started coming from one of the rooms, frightening the visitors. Could it be one of Kaz's family members?