Death of a Lie - Barbara O'Grady Mystery Series, #5

The art world is deadlier than it looks. Former artist Barbara O'Grady is now a seasoned private investigator who is finally living her dream-until all hell breaks loose. The assistant manager at an internationally acclaimed local art gallery-herself a promising young artist-has vanished. And the missing woman's sister, Barbara's new client, fears her sister is targeted for murder. Barbara's gut instincts aren't happy with either the case or the client.
And the deeper she digs, the more dangerous the investigation becomes. If she handles this one wrong, it won't be just the client's sister's life at stake. It will be her own.