The Prisoner was all about family, and the things we'll do for them.
On the one hand we had the Stynes, and we followed young Cyrus Styne (Connor Price), who wasn't a particular fan of his family's eccentricities, and saw how his family 'protected' him from bullies, initiated him into their ways, and sent him off on a mission with cousin Eldon.
On the other, we had the dysfunctional extended Winchester family. Dean blames Sam for Charlie's death and so heads off to bring righteous justice to the Stynes (only to end up on their operating table), while Sam - against Dean's wishes - continues his dangerous liaison with Rowena in the hope that she can crack the Book Of The Damned and find the spell required to remove The Mark Of Cain from Dean's arm.
Thankfully, Charlie had one last gift for Sam: before she died she managed to email him the translation she was working on, which is what Rowena needed to be able to read the dread Book Of The Damned. But Rowena digs her heels in and refuses to read the book while her errant son, Crowley, is still alive.
Sam goes off to confront Crowley, but things don't go exactly according to plan.
The introduction of the 'reluctant Styne', Cyrus, was a clever touch, especially the way it played out when he and Eldon raided the Winchester's bunker HQ, on the hunt for magical artefacts and tomes.
As the penultimate episode of the season, The Prisoner moved all the pieces into position for the final confrontation next week: Sam versus Dean.
Next Time (Season Finale):