Daisy Dalrymple is excited to be showing her nephew and future stepdaughter the glories of Kensington's Natural History Museum. But when they hear a tremendous crash, they are horrified to discover one of the curators dead - horribly murdered - atop of a pile of dinosaur bones. Together with her fiancé, Detective Chief Inspector Alec Fletcher of Scotland Yard, Daisy is soon investigating a baffling case where professional grudges boil over into murder...