Certainly in the second film [Maigret's Dead Man], which is quite a more unpleasant and darker story, it's quite different in tone and feel.

[Maigret Sets a Trap] was always going to be the first film, and it seemed to be quite a nice story. But of course it meant that here I was playing this new character for the first time, in a place where he had been a relative failure, as all these people had been murdered and the pressure was on. Rather than starting optimistically with his pipe in front of the fireplace, he was in quite a difficult place.

I think you're bound to get a sense of any character that you play. It's not something you often do in comedy.

Get that right, then- if you get the quality right, then the marketability or whatever; your ability to sell videos or your ability to earn money or whatever, will follow naturally. But try to be creatively lead rather than market lead. And that's important to me.

I've read about eight or ten of the original novels, and one of them is where Maigret's in bed for the entire story! His wife is running around and solving the case!

This is sort of inflection-free acting [playing Maigret], and I really wasn't sure if I could do it - you make your mind up on whether I've succeeded or not. But yes, I found it difficult when we were shooting; it was a couple of weeks before I settled into not worrying - to finding a way of delivering those lines - so my worries of many months before I think had been justified. I found it a difficult way of being.

The character [Maigret] is bound to change and develop, and I wouldn't like to claim that we are perfectly formed straight out of the box. I think it's what I'd call an 'optimistic start'. As you know, for me, no glass is anything other than half empty, so I apologise for my reticence in terms of promoting this programme.