The haunted library - There's a ghost in the attic

Kaz isn't an ordinary boy – he's a ghost. And Klara isn't an ordinary girl – she can see ghosts. Their detective agency is therefore perfectly suited for solving mysteries! This time, their investigation leads them to the neighbour's attic, where spooky sounds have started coming from. What's more, Kaz spots a dog through the window that looks just like his ghostly canine friend, Cosmo. They'll need to leave the safety of the library walls and venture outside. But how can they do it without Kaz getting blown away by the wind again?