B.R. Stateham 
Murderous Passions [EPUB ebook] 

Working on multiple cases at the same time, homicide detectives Turner Hahn and Frank Morales have their plates full of problems.
Turner is a man with an unnerving resemblance to a 30’s movie matinee idol. He has the same jet-black hair, the same wiry, sardonic grin permanently creasing his lips, and the same deep dimples creasing his face. He’s rich, he’s smart, and he has a cool car.
Frank is a genetic freak. Big, with no apparent neck to speak of, he has bright carrot-colored red hair pulled back into a man bun and a thick mustache of the same color. Hidden beneath the surface is an eidetic memory that forgets nothing, and the same dry, sardonic wit that his partner has.
Whenever a tough case comes along, the higher-ups dump it into the laps of Turner and Frank. The cases nobody want to touch are the ones these two are best in solving. And they do it with a style all their own.