“IT is a serious drama where we ask serious questions.

“There is a very sensitive subject matter – it explores the nature of good and bad and evil.”

Anna Maxwell Martin talking to me about her role as Merrily Watkins in chilling new ITV drama Midwinter of the Spirit.

Based on the novels by Phil Rickman, the three-part series begins at 9pm on Wednesday (September 23).

There is a lot to say about what has the potential to be a long running returning drama.