S8, E24: McGarrett joins Junior and his SEAL Team on a high risk covert mission to capture an elusive target who is holding his mentor, Joe White (Terry O’Quinn), hostage. Also, Gerard Hirsch (Willie Garson) and Kamekona help Grover and Tani on a murder case involving masterpieces stolen by the Nazis during WWII and Tani makes a shocking discovery. Terry O’Quinn and Willie Garson guest star.