With all due respect, I have a job to do, and that is to try and make 'Endeavour' the best it can be.

I just don't really like starting a job if I don't know where it finishes. I want to know where something begins and ends so that you can invest something in it.

Acting is an amazing job. I'm very lucky to do it, and when you're working with terrific people, telling stories you care about, and know it reaches an audience who care about it, too, there is an escapism in that.

If I can be dead honest with you, when I first see the script for a new episode of 'Endeavour,' if anything jars, I say, 'What's this? Has it got a place in our story?' And if it hasn't, it has to go.