Books in the The Scott Series series

The good wizard promised to leave Scott alone after he successfully completed the Ten Kingdoms challenge, and wizards always keep their promises, right? Wrong. Scott is drawn back into the spooky house yet again, but this time, the nasty wizard, Snosrap, has evil plans for Scott and his girlfriend, Mel. Working together, they must find the Ten Keys hidden by Snosrap or be forever doomed to live in Snosrap''s hostile bog world.