Another double-header for Thrones fans for whom winter can't come soon enough. Season six continues tonight with one of the show's strongest and most revealing episodes, The Door, as Brandon Stark and his companions find themselves holed up in a cave with the White Walkers and the army of the dead outside. The second offering in tonight's double bill is Blood of My Blood, which sees Samwell Tarly returns to his ancestral home, Horn Hill, only to find he is persona non grata so makes off with the family's Valyrian steel sword, Heartsbane - which is a nice weapon to hold if you are in the company of a White Walker. Meanwhile, Jaime Lannister's attempts to free Margaery from the Faith Militant are dashed when both she and the boy-King Tommen fall under the influence of the High Sparrow. Game of Thrones - weekdays from 9.00pm on Sky Atlantic.