Sunday, Seven, 9.30pm
Is there trouble in the land of Castle? After its protagonists Castle and Beckett (Nathan Fillion, right, and Stana Katic) finally got together after four seasons, then got serious and got married in season seven, the relationship is now on “pause” as Beckett secretly takes on a new case. For a series that prides itself on its lightness and charm, circumstances are increasingly dark and just a little depressing. Beckett and Castle both look miserable, with one wondering, where is this all headed? This couple’s relationship has become beyond frustrating, testing the nerves and loyalty of its fans – and the scopes of believability.