Hodiak is newly "retired" and tries to hunt down the serial killer who's been tormenting him in the series finale. Also: Manson sends Tex, Sadie, Emma and Patty on a mission, and they get swept up in one of the country's most notorious crimes.
Hodiak falls into trouble again with Internal Affairs, forcing him into a tamed role in the precinct. Also, the Manson family's misfortunes take a positive turn when a music producer arrives to record Manson's music.
Ken and Emma reconcile, yet Emma is determined to find Manson. Meanwhile, Hodiak seeks the truth about Bunchy's murder, though his actions might jeopardize Charmain's career, and Shafe happens upon an old friend at rehab.
The Manson family receive two surprises, one a blessing, the other a threat. Meanwhile, Hodiak faces roadblocks while probing the case of the photographer killer, Grace forges plans for Emma, and a shootout impacts Shafe's marriage.
Shafe's addiction troubles escalate. Meanwhile, Hodiak helps an old war buddy track down his blackmailer, Karn amasses information against Bobby Kennedy, and Grace finds a newfound passion for politics.
Internal Affairs has suspicions about Hodiak, but a tragedy slows the investigation. Also, Manson becomes jealous of a courtship between Dennis Wilson and Emma, and Emma and Manson meet a record producer who lives at the future home of the Tate family.
Hodiak tries to prevent a riot as he probes a murder in a black neighborhood on the day of Martin Luther King's assassination. Meanwhile, Kristin's Black Panther involvement creates tension in her marriage, and Charmain's drug case concludes.