The Third Sin by Aline Templeton
When the body of a man is found in a car wreck on the Solway mud flats, it’s initially treated as an unfortunate accident. That is until he’s identified as a man who was declared dead two years previously. DI Marjory (Big Marge) Fleming is called in to assist in the investigation, much to the chagrin of DI Len Harris who is relegated to following her lead.
Her investigation finds that the dead man was part of a group called the Cyrenaics who believed that pleasure was the ultimate – until one of them died from an overdose. The group disbanded, with some moving away, others disappearing, and one supposedly committing suicide. It is this last person who is now the center of their investigation.
Fleming and her team are tasked with investigating the recent death while having to review the case of the overdose death two years previously. Their job is complicated enough without the constant hostility of Harris and his team who go as far as with-holding evidence with the aim of sabotaging the investigation.
A complicated case with complex characters leads to a whopping good mystery. Templeton is at the top of her game with this one.