A newly "retired" Hodiak tracks down the serial killer who has been tormenting him for months, without the protection and authority of his police position. Manson sends Tex, Sadie, Emma and Patty to 10050 Cielo Drive, where they are swept up in one of the most infamous crimes in the country's history. (Season Finale)
Manson and the Family receive two surprises: one a blessing, one a threat. As Hodiak tries to investigate a new clue in the case of the photographer killer, a series of roadblocks forces him to take a proactive measure. Meanwhile, Grace makes plans for Emma. A shootout between the Black Panthers and LAPD reverberate in Shafe and Kristin's marriage.
On the day of Martin Luther King, Jr.'s assassination, Hodiak must investigate a murder in a black neighborhood while trying to prevent an imminent riot. In the midst of the crisis in the black community, Kristin's involvement with the Black Panthers drives a wedge between her and Shafe's marriage. Meanwhile, Charmain brings the drug case to a close and discovers the full cost of undercover work.