Sleep Like a Baby is the tenth and most recent (although not all that recent, from 2017) in the Aurora Teagarden series by Charlaine Harris. This is Harris' first series, and it's more of a classic mystery series, without the paranormal background of Harris' much better known Sookie Stackhouse series.
Baby has dropped to $1.99 at Kindle and Kobo US.
Kindle US:
https://www.amazon.com/dp/B06WVB8L67/
Kindle US/Smile:
https://smile.amazon.com/dp/B06WVB8L67/
Kobo US:
https://www.kobo.com/us/en/ebook/sleep-like-a-baby-1