Cast in Order of Disappearance is the first in Simon Brett's first mystery series, the Charles Paris series. I've read and enjoyed a lot of books in this series, including this one, although I'm a bit fonder of Brett's later Blotto/Twinks and Mrs. Pargeter series. In any case,
Cast has dropped to $2.99 at Kindle US, which is not great for more than 40-year old backlist, but per eReaderIQ, it hasn't been even this cheap in years, so grab it if you want it...
Kindle US:
https://www.amazon.com/dp/B006CVNU7G
Kindle US/Smile:
https://smile.amazon.com/dp/B006CVNU7G