What to read after Crooked Little Vein?

Burned-out private dick Michael McGill needs to jump-start his career. What he gets instead is a cattle prod to the crotch. The president's heroin-addicted chief of staff wants McGill to find the Constitution—the real one the Founding Fathers secretly devised for the time of gravest crisis. And with God, civility, and Mom's homemade apple pie already dead or dying, that time is now. But McGill has a talent for stumbling into every imaginable depravity—and this case is driving him even deeper into America's darkest, dankest underbelly, toward obscenities that boggle even his mind.