Shetland: Season Four - Episode Two

Tosh: 'Twenty-four seven I'm keeping it together. And it's exhausting.'

One thing that's concerning me this season is the return of Cassie and Tosh. Don't get me wrong, I love having them back, but you have to wonder why they're back. If last season taught us anything, it's that the show doesn't shy away from hurting Tosh, and in a story centred around the murder of young women, you have to worry for Cassie. It's uncertain yet whether Alan Killick is guilty of anything more than loving someone who didn't love him back, but on an island as small as Shetland, the murderer can't ever be more than a stone's throw away.

Shetland: Season Four - Episode One

Malone: 'You know, your daughter didna deserve this. But you did.'

If there was ever a perfect time to watch Shetland, it must surely be a cold February night, with the wind howling around the eaves, rain thrashing the latticed windows, and a gigantic bowl of porridge on your lap. I unashamedly love Shetland. Whether that's because it's so different from other UK detective dramas, or because I think the sun shines out of Ann Cleeves' bottom, who can say? What I do know is that Tuesday nights just got a whole lot murderier.