Crime fiction title with a word to do with intelligence

Today's is a crime fiction title with a word to do with intelligence. Check Kate's blog to know more. I started with "Desapareceu um Inventor" (can be translated as "An inventor disappeared" (scientist)), which the original title is "Your deal, my lovely" by Peter Cheney. Never read this one and it's one in the FBI agent Lemmy Caution series.

https://paulasimoesblog.wordpress.com/2026/04/06/murdereverymonday-crime-fiction-title-with-a-word-to-do-with-intelligence/