East Long Beach. The LAPD is barely keeping up with the high crime rate. Murders go unsolved, the elderly are being mugged, children go missing. But word has spread: if you've got a case the police can't - or won't - touch, Isaiah Quintabe will help you out.
They call him IQ. He's a loner and a high school dropout, his unassuming nature disguising a relentless determination and a fierce intelligence. His clients pay him whatever they can afford, a new set of tyres or some homemade muffins. But now he needs a client who can pay. And the only way to that client is through a jive-talking, low-life drug dealer he thought he'd left behind. Then there's the case itself. A drug-addled rap star surrounded by a crew of flunkies who believes his life is in danger; and a hit man who even other hit men say is a lunatic. If he solves this case, IQ can put right a mistake he made long ago. If not it won't just be the hit man coming after him ...