Waouh! This is even better than the first book in the series, Like Coffee and Doughnuts. 
 The style is still great, it reads easily and it is like watching the TV series "The Wire" because it feels so real. 
 I like the fact that the Dino, PI is a good guy, but no straight law-abiding citizen. He knows when to bend the rules. You have to in his business. I find the PI job description captivating. He does not only investigate, he also get down and dirty, being a kind of muscle-man for his clients as well: car repossession in the middle of the night, breaking into someone's property, "muscled" debt recovery, nice women championing with a gun at arm point. He is just "The Man" if you are in trouble. In spite of the rough side of his business, Dino is an old fashioned gentleman who does not do casual sex. 
 I like the fact the fact that Seth, the mechanic, is such a wild child. He is 34 but seriously, he is 20 at heart. He mingles with college twinks like a fish in pond. He loves sex and would fuck a tree if he was horny. Men, women, any time, anyway, anywhere, he is in. He is a very sensual casual sex machine and at 34 he has never been in a relationship. He balances Dino's gravitas. 
 This book starts one month after the heroes became a couple. The relationship is still at its beginning and they are not even sure if they are boyfriends or what. And add to that Seth's worrying track record in relationship (null), Dino's newness at relationship with a man, and a gorgeous ex Dino had loved who now asks him to be his hero and save the day for her, and you have the picture of what this book is about. 
 In addition, the mysteries to solve are great, well done. And the relationship between Seth and Dino is amazing: lots of chemistry, great friendship, lots of action together (investigating, arguing, fighting, making up, making love...). And the sex is even hotter than in the first book. 
 A keeper.