The new season of Victoria, starring Jenna Coleman as young Queen Victoria, arrives next Sunday on the PBS Masterpiece series – so tonight, as prelude and reminder, PBS presents the final three episodes from last season. These culminate with the “Comfort and Joy” episode, which has a surprising climax for a period drama series: an action sequence involving Prince Albert’s sudden collapse into the thin ice of a lake in winter, with Queen Victoria risking her own life to save him. And according to the real Queen’s royal diary, it really happened – and sets the scene for next week’s new season of shows. Check local listings.