The duo are enlisted to design a memorial garden based on the myth of Orpheus and Eurydice, but someone begins vandalising their work on a nightly basis. Matters are complicated still further by the death of a recovering alcoholic, whose body is found at the site.

The duo are hired to investigate why newly planted roses at an upmarket preparatory school keep dying. After witnessing the arcane ritual of the Night of the Stag, they detect tensions between modernising headmaster Quentin Marshall and established members of his staff who are harbouring secrets someone is prepared to kill for.