The Winning Keys
This was a contract job for the author of a non-fiction book. It is available on amazon.
https://www.amazon.co.uk/Winning-Keys-Unlocking-Kingdom-Inside-out/dp/1530230446/ref=sr_1_1?crid=1DHIJWLM02ERX&dchild=1&keywords=the+winning+keys&qid=1615480797&sprefix=the+winning+keys%2Caps%2C134&sr=8-1