Opera singer Claire Buchanan is haunted by the recent death of her twin sister Catherine, & niece,in childbirth. Claire feels her sister‘s lingering presence. Postmortem photos offered a way for those left behind to assuage their grief. But Claire sees only deep sadness in her sister‘s eyes.She suspects her brother in-law,a cold,calculating,controlling man of her murder.Claire hires Prudence MacKenzie & ex Pinkerton Geoffrey Hunter to investigate.