In the conclusion of Streets of San Francisco's two-part Season Five opener, a band of urban revolutionaries continue to hold an entire jury hostage on a ship, threatening to kill them one by one unless the group's leaders are released from prison. The tension mounts as the first hostage is murdered and homicide inspector Steve Keller (Michael Douglas, in his final series appearance) is gunned down on the eve of his retirement from the force. Keller's partner Mike Stone (Karl Malden) must rely upon the daring and resourcefulness of SFPD newcomer Dan Robbins (Richard Hatch) to rescue the terrified prisoners.