The Sound of Broken Glass is the fifteenth in the Duncan Kincaid / Gemma James series by Deborah Crombie. It has dropped to $1.99 at Kindle and Kobo US.
Kindle US:
https://www.amazon.com/dp/B0089LOOB8
Kindle US/Smile:
https://smile.amazon.com/dp/B0089LOOB8
Kobo US:
https://www.kobo.com/us/en/ebook/the...f-broken-glass