It's too early for me to say whether it's important to read the books in the order in which they were written, but if it's important to you, you'll find a list [[Ann Cleeves' George and Molly Palmer-Jones Books in Chronological Order|here]].
{{amazontext|amazon=1447289056}}
{{amazontextAud|amazon=B00UCAHJAM}}
{{amazontext|amazon=1447289056}}
{{amazonUStext|amazon=1447289056}}
{{commenthead}}