Joffe Books appear to have gotten the e-rights to V.C. Clinton-Baddely's five Dr Davie books, first published in the 1960s - 1970s. (Per
SYKM, the author's full name is Victor Vaughan Reynolds Geraint Clinton-Baddeley. Whew!) I remember reading these in paperback a few decades ago, but don't remember much other than a general pleasant memory of the series. Right now, an omnibus of the first four books is going for $0.99/£0.99 in the US/UK, and the fifth book is also $0.99/£0.99 individually.
Classic Cambridge Murder Mysteries
contains:
Death's Bright Dart,
My Foe Oustretch’d Beneath the Tree,
Only a Matter of Time, and
No Case for the Police
Kindle US:
https://www.amazon.com/dp/B0BS4C9HTP
Kindle US/Smile:
https://smile.amazon.com/dp/B0BS4C9HTP
Kindle UK:
https://www.amazon.co.uk/dp/B0BS4C9HTP
Kindle UK/Smile:
https://smile.amazon.co.uk/dp/B0BS4C9HTP
To Study a Long Silence, #5
Kindle US:
https://www.amazon.com/dp/B0BPF249YD
Kindle US/Smile:
https://smile.amazon.com/dp/B0BPF249YD
Kindle UK:
https://www.amazon.co.uk/dp/B0BPF249YD
Kindle UK/Smile:
https://smile.amazon.co.uk/dp/B0BPF249YD