The Hangman's Song

The Hangman's Song is book 3 in the Inspector McLean series. It follows directly on from the events in book 2, The Book of Souls.
The Hangman's Song is a dark tale, with uncomfortable subject matter; prostitution, people trafficking and suicide.
The supernatural elements are stronger in this installment too, and McClean struggles with the idea of souls in torment.
There's plenty of dark humour in the book too, and the welcome return of Grumpy Bob and DC Stuart MacBride.
I discovered this series quite late, but boy am I glad I did.