Who is Viola Swamp?!

Miss Nelson goes missing after she is fed up with her naughty class from Room 207. When she doesn’t arrive at school one day, the kiddos think it’s time to play. But little do they know that the scariest and ugliest substitute teacher was hiding in the shadows. With a wart on her nose and a unibrow, Miss Viola Swamp slams her ruler to gain order of the unruly. Where is Miss Nelson and…Who is Viola Swamp?