A serial killer in Los Angeles is running rampant and murdering parents in the living rooms of their homes while their children and locked away in the closet forced to watch the horrific act in front of their innocent eyes. The FBI's Behavioral Analysis Unit is called in by local law enforcement to solve the case and put the Unsub behind bars for good. While the Unsub is on the loose, an innocent family with a little girl, Lyric, are his new targets; the clock is ticking till disaster strikes again. Will the BAU be able to put the Unsub behind bars in time or will they be too late? (A Spencer Reid focused story: Part 1 of 2)