The Major Crimes unit continues to investigate the conspiracy behind Dwight Darnell's murders and his links to the Zyklon-Brotherhood. Sharon Raydor, disturbed by her own reactions to the case, seeks penance in the Ritual of Confession.

When Captain Sharon Raydor and the Major Crimes Division investigate the murder of a young woman found in the LA River, their case is not only impeded by a secretive PI working for a tech industry millionaire, but also by Deputy Chief Winnie Davis, who regards Sharon as competition for the promotion to Assistant Chief of the LAPD.