Darkness is nothing new to LAPD Detective Margaret Nolan, but in P.J. Tracy's The Devil You Know, even she isn't prepared for the scandalous deception of deadly proportions that shakes the very foundation of Hollywood and its untouchables...and leaves her entangled in its rotten core. Los Angeles has many faces: the real LA where regular people live and work, the degenerate underbelly of any big city, and the rarefied world of wealth, power, and celebrity....