Erin and Anthony must trust a sociopath who claims he hasevidence to convict a double-murderer. Also, Frank facesbacklash from his department when he suspends an officer forviolent behavior, and Danny and Baez try to arrest a notoriousgangster who appears to have people covering for him inside thedepartment.
Mike and Mandy go to extreme measures to help Vanessa connectwith voters in her State Assembly campaign. Meanwhile, Ed'soffer to split a baby gift for Kristin and Ryan leads Chuck andKyle to wonder which of them makes more money.
After Steve receives a posthumous letter from his mother thatcontains a cypher, Danny is attacked by someone willing tokill to steal it. Five-0 must help Lincoln Cole, an anonymousgood Samaritan who's in the crosshairs of some very dangerouspeople.
When Rocky hears a sneeze through his apartment wall, he fallsdown a shame spiral, reliving embarrassing moments. Anattention-seeking A.J. fails to make plans for Halloween-untilan emergency text from an ex-friend, Francis, evolves into anunexpected night with Francis' assistant, Cheyenne.
Hazel lets Shannon watch Patch with frightening consequences.Uncle Max gets Leonie involved in a legal matter as heconfronts his mortality. Kam navigates his first day atEmbleton while Sully helps Ana at uni.