Sam and Dean's routine case turns out to be anything but.
Upon learning the key to opposing The Monitor, Oliver and team return to Russia on a mission to gather the necessary materials; Diggle reunites with a figure from his past.
Despite losing to the world champion Apollo Creed, boxer Rocky Balboa earns the respect of people from his field. Exasperated over not being able to defeat Rocky easily, Apollo demands a rematch.
Based on the stories of Stephen King, the series intertwines characters and themes from the fictional town of Castle Rock.
Sam and Dean receive a visit from an old friend; Castiel investigates a local teenager's disappearance.
Maxwell Smart, an intellectual but bumbling spy, is paired with Agent 99, an experienced operative, to prevent KAOS, a terrorist organisation, from carrying out their sinister plan.