This is a book by Johnathan Mitchell, a high functioning autistic in his fifties, who is a gifted writer. The plot centers around Drake, an 49 year old unemployed autistic man, who receives TMS treatment. As a result, he becomes an excellent poker player, since he can now read the cues from other poker players, and becomes more dateable. However, his poker skills later put him into danger. It's really suspenseful, and you'll feel like you're there.
The book is located at Amazon (clicky) as a digital download if you're interested.