Frightmare Manor – Tennessee’s REAL Screampark is a self-guided tour of the Best Haunted Houses in Knoxville with highly-demented monsters terrorizing you through America’s #6 Scariest Haunted House. Set at the Original Jeremiah Lexer Plantation in Morristown, Tennessee, the Lexer Mansion is a REAL Haunted House and is located between Knoxville and Johnson City. True Terror Exists Here…