While Five-0 investigates a scheme to rob tourists, Tani helps Girard Hirsh (Willie Garson) prove the innocence of his elderly uncle when he’s suspected of murder. Also, Tani and Junior work on the nuances of being in a new relationship

After Steve receives a posthumous letter from his mother that contains a cypher, Danny is attacked by someone willing to kill to steal it. Five-0 must help Lincoln Cole, an anonymous good Samaritan who’s in the crosshairs of some very dangerous people.