More mysteries than usual in the US Kindle Daily Deal today, mostly Penguin titles, all at $1.99 each unless otherwise indicated...
The Cat Who Could Read Backwards, Cat Who #1, by Lilian Jackson Braun:
https://www.amazon.com/Cat-Could-Rea...dp/B000OCXJ6Q/
The Purity of Vengeance, Department Q #4, by Jussi Adler-Olsen:
https://www.amazon.com/Purity-Vengea...dp/B00FFFNB60/
Black Wind, Dirk Pitt #18, by Clive Cussler and Dirk Cussler:
https://www.amazon.com/Black-Wind-Di...dp/B0053YNU28/
Buried In a Bog, County Cork #1, by Sheila Connolly:
https://www.amazon.com/Buried-Bog-Co...dp/B0095ZMHUW/
Murder in the Rue Dumas, Verlaque and Bonnet #2, by M. L. Longworth:
https://www.amazon.com/Murder-Verlaq...dp/B0083JBY64/