On quiet back roads, just out of earshot from the noise and the glitter of 1950s Los Angeles, love-addled teenage couples park their cars at night to be alone. But these steamy lovers' lanes are suddenly transformed into nightmarish hunting grounds when a lone predator, posing as a cop, begins to terrorize the teenagers and assault the young women in the cars. The LAPD is only able to get a vague description of the suspect- an African-American male. A former LAPD officer named Todd Roark, recently fired from the force, is fingered as the suspect and the case appears to be closed when Roark is arrested. But Detective Danny Galindo-a Mexican-American cop in a nearly all-white department-isn't convinced. The assaults continue, and Galindo races to find the man responsible and clear Roark's name. To do so, he'll navigate the oddball world of Hollywood special effects and face the entrenched racism of his colleagues at the LAPD.