Sarah knows she shouldn't be here. The Kellings never did get invited back after that unfortunate incident when Madam Wilkins first opened her palatial museum to Boston's most critically outspoken Brahmins. But things have been quiet at Sarah's elegant Beacon Hill boarding house lately -- nobody's been murdered in months. Lodger Max Bittersohn has free passes to today's concert, and he's one man she finds hard to turn down. But then something falls past them from the floor above, and the oldest guard sprawls dead among the hyacinths.