Dying Breath — Sarah J. Mason

METHOD OF MURDER
Dr. Holbrook was working on a top-secret project for Allingham Alloys when he was suffocated by a gas leak. His colleagues in Research and Development described him as bad-tempered, stubborn, notoriously stingy... and undeniably brilliant. Now his work is left unfinished--but the case won't be left unsolved, because Trewley and Stone are about to make some deductions of their own...

MEET TREWLEY AND STONE
Detective Superintendent Trewley has years of experience probing the dark secrets of cozy English village life. But even he can use a bit of help sometimes. That's where Stone comes in: with the mind of a scientist and a black belt in judo, she's the perfect partner for tough old Trewley--and together, they're the perfect crime-solving team.