
I did quite a lot of research into the relationship between the infamous gay spies from the Cambridge Spy Circle. There was a sense that if you were gay, you were untrustworthy and intrinsically a traitor. In terms of the history of gay spies in this country, there were prominent gay spies and we know that MI6 reacted very strongly. If you’re telling a story about manipulating someone’s private life to distract the public from a murder, with a gay victim you can play on more prejudices and stereotypes than if they were straight. “I had a sense we’ve never had any kind of thriller headed by a gay love story at all.

I was very lucky to have such an extraordinary actor.” He’s in every scene more or less, the show hinges on the audience falling in love with him and going on this dark and disturbing journey. All the rewrites were done after talking to him. After three scripts, we sent it to him and he signed on. “When I started out, I thought it would be wonderful to get Ben. Was the part written with Ben Whishaw in mind? The fundamental question posed by his death was was it a murder disguised as something he did to himself? I thought an interesting fictional story would be to have a partner confronted by a death that looks like someone’s life but is completely different to the person they knew.” For example, if someone drinks too much, you could stage a drink driving accident. Tom Rob Smith: “I was reading a CIA handbook written in the ‘60s about how you could use an accident to kill people, saying the key thing is to root it in their life.
