This is a fun series which I find adorable. First, I just love the art and the characters; they all have a creepy-cute air about them. This story concentrates on Mr. Snarf, a ghost, being arrested by officers from his home, a cloud city. The gang takes off in an hot air balloon to rescue him only to find the ghosts live in a city where it is forbidden to do basically anything. Could incite some discussion about laws, what they are for, and when they go too far taking away freedom. Fun book, I missed #3 so I'm going to go back and read it too.

Four friends set out to the land of ghosts to bring back their ghost friend, Mr. Snarf. The land of ghosts is a place where everything is forbidden. When Marietta, Celestin, Kiki and Mr. Leclair are caught doing mundane things, they are sent to jail and put on trial. They will have to rely on each other and their smarts to get out of their sticky situation. Filled with quirky characters, this will appeal to middle grade readers.