Surfeit of Lampreys

The killingly aristocratic Lamprey family exemplifies charm, wit, and a chronic lack of funds. Their only source of hope is the wealthy but unpleasant Lord Wutherwood, and the Lampreys may perhaps be forgiven for doing a little jig when his Lordship is killed and the resulting inheritance saves their bacon. Inspector Roderick Alleyn wouldn't dream of judging the Lampreys' joy. But he would like to figure out whether they murdered their benefactor.