Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A scholarly mystery

Joe Blue Collar is busily cataloging Elizabethan goodies. Posh Posy envies and resents him. Together, they hie themselves off to London town, supposedly to authenticate a letter in which Will the Bard admits he's a fraud. Literary and scholarly skullduggery await. This is a cross-genre book that should have wide appeal.