DCI Sloan and Constable Crosby find themselves assigned two very puzzling cases. First, there's the young woman's body found floating in the River Alm. Then, there's the mysterious break-in at Berebury Nursing Home. The room of a recently-deceased resident was entered, yet nothing seems to be missing. What could the intruder have been after? It becomes apparent to Sloan and Crosby that the two cases are connected - but who can the killer be?