Just finished Talbot's _The Devil's Chessboard_ about Allan Dulles and the CIA.
I was already somewhat familiar with MKULTRA and some other notorious CIA actions. But by reading this book I learned some new things about violent incidents that allegedly involved CIA illegality, most notably the assassination of Congolese independence leader Patrice Lumumba.
Much of the book is dedicated to Talbot's theories about involvement of CIA and Dulles with assassinations of JFK and RFK.
The book is not written in a way that makes it easy to check Talbot's sources, reasoning etc.
Would not recommend this book although it did give me some topics for further reading, specifically Lumumba and the US House Select Committee on Assassinations.
I think it's likely that there are more rigorous books covering the same subject matter (or preferably multiple books each covering a subset) although I can't make a recommendation here.