Dr. Priestley's Quest, first published in 1926, is the second book in the Dr. Priestley detective story series.

Mysterious warnings are sent to the murder victims instructing them to avoid the places where their corpses are afterwards found, and this, not unnaturally, preys upon the mind of the recipient of the second of these documents. All precautions taken to preserve his life are in vain. It is a spine tingling plot, but Doctor Priestley's fortunate discovery of a packing case of unusual manufacture, held together with brass screws, puts him upon the track of the very last person who could reasonably be suspected of the crime.