Staying with their aunts over the summer, Neil Cady, his sister Bree, and their new friends Wesley and Eric, set out to explore Greylock Hall, an abandoned psychiatric hospital which is supposed to be haunted by the ghost of Nurse Janet. Interest Level: 3-6 Reading Level: 4.8 ATOS Book Level: 4.8 AR Interest Level: MG AR Points: 9 AR Quiz: 152757EN Reading Counts Level: 4.3 Reading Counts Points: 13 Lexile Measure: 690 Iowa Children's Choice Award 2014 - 15.