Spooky Boo is the 51st episode of season 1, the 51st overall of Clarence and the season finale of season 1.
After Clarence leads a few neighborhood kids through his homemade
haunted house, Chelsea suggests they go to the high school kids haunted
house for some real scares. When the gang makes a wrong turn they find
themselves in a mysterious house on a hill full of creepy sounds,
ghoulish shadows and a mutant rat man!