Aquarius

Hodiak receives some disturbing fan mail as Charmain takes a dangerous plunge undercover and Brian discovers Roy's true intentions. Ken takes aim at Hal as Charlie fears an old prison mate is back to collect a debt.

Charlie cooks up a plan for Ralph and his crew; Hal wakes to a nightmare; and Hodiak gets leverage for his son.

Charlie bonds with a Beach Boy, while "Tex" joins the Manson Family. Hodiak and Grace tread familiar territory as Brian takes a stab at a killer and gets rewarded for his sharp work.

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.

Internal affairs turns up the heat on Hodiak, but a tragedy interrupts the investigation. Meanwhile, Dennis Wilson's courtship with Emma ignites jealousy in Manson. Dennis takes Emma and Manson to meet a record producer who lives at 10050 Cielo Drive- the future home of the Tate family.

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.

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.

Shafe, alone at the bloody Tate crime scene, is confronted by his own demons. As Manson searches for a missing Emma, he ends up on Hodiak's doorstep. Meanwhile, Ken Karn goes to new levels for international diplomacy.

Sharon Tate begs for her life but Sadie has no mercy. Manson tries to track down Dennis Wilson. Meanwhile Hodiak finds Emma in a sanatorium, but will need help to get her out. While, an unemployed Ken Karn reunites with an old friend.

Ken and Emma reconcile; Emma wants to find Charlie; Hodiak resolves to get to the truth behind Bunchy's murder; Shafe finds an old friend at rehab.

Hodiak is in trouble with internal affairs, forcing him to the sidelines in the precinct; Terry Melcher arrives and wants to record Charlie Manson's music.

Hodiak decides to take matters into his own hands and shows up on the doorstep of the mysterious serial killer who has been sending him obscene pictures. Meanwhile, Manson sends Bobby, Mary and Sadie to go to extreme measures to get money from Gary Hinman.

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.