If you've read any amount of history on mind control or MKULTRA I don't think much in this book will be novel to you. I want to say this would be a good introductory book on the topic but perhaps this is the limit of the topic since there really isn't much official or confirmed information out there.
I did appreciate that, although brief and limited, Bowart makes note of the Soviet ventures into mind-control technology. It is mostly in comparison to US attempts but there were mentions of specific experiments and technologies developed. The argument is made that alongside nuclear weapons and space programmes, mind control was also being fervently pursued by Soviets and Americans.

For recommendations, I can recommend John Kiriakou's books. They're basically airport thrillers/adventure stories, but written by a former CIA officer, so they do offer some first-hand insight into the agency.
Also, Behold a Pale Horse by William Cooper is pretty much the quintessential schizo conspiracy book in my opinion. Cooper's take on the JFK assassination is pretty hilarious.
I can also recommend flipping through The First Earth Battalion Field Manual. The illustrations are dope.