Actor Sam Heughan (Danny): "He's got a lot of baggage. He comes across in the first few episodes as being quite a good guy. He's a police officer. He's got this beautiful wife and he's got a kid. Everything's just fine. But we begin to realise that underneath it all, there's a lot of secrets that he's keeping. And his relationship with Becka is tested a lot by their situation. They have this slightly open relationship. But it's all played out in some pretty dark places. I think this is a story about love but it's a very strange route that we go through to get to that point."