When Miss Nelson disappears and the mean-looking substitute Miss Viola Swamp takes her place, the children are so desperate they hire a detective to find Miss Nelson in this wacky whodunit hit! Support American Theatre: a just and thriving theatre ecology begins with information for all. Please join us in this mission by making a donation to our publisher, Theatre Communications Group. When you support American Theatre magazine and TCG, you support a long legacy of quality nonprofit arts journalism. Click here to make your fully tax-deductible…