DEBBIE Simpson, whose father, Peter Heron, was arrested and charged with the murder of his wife and her step-mother Ann, has written a poem from the point of view of the killer. It is a challenge to Durham Police to catch the killer and identify the 'sun-tanned' man seen speeding away from the scene of the murder on August 3, 1990.

Mrs Simpson's poem:

2015 and still I’m free;

I really can’t believe you don’t know it was me;

Who drove up the drive on that hot sunny day;

Who saw Ann outside, on the sun-bed she lay;

Who took her life in her very own home;

And left her there to die alone;

The clues were there for all to see;

I really can’t believe you don’t know it was me;

I fled the scene in a car painted blue;

Two witnesses saw and got a good look at me;

A few seconds earlier and our cars would collide;

Thankfully for me, luck was on my side;

Little did they know when they saw me leave;

Driving erratically and frantically at very high speed;

The scene of devastation I’d left behind;

For her poor husband, Peter, and others to find;

The clues were there for all to see;

I really can’t believe you don’t know it was me;

Dark haired and suntanned I was in those days;

A young man, early 30s, that day is a haze;

25 years on, aged about 53;

I really can’t believe you don’t know it was me;

My luck continued in those early days;

When the search and appeals were destined to fail;

As time went on I dared to dream;

That maybe, just maybe, I’d outwitted the team;

Outwitted I did, in spectacular style;

Her husband’s arrest, really made me smile;

And when eventually he was charged with the crime;

I was happy for a man of 70 to do my time;

I had my concerns though, I have to say;

When you took the decision to walk away;

I thought that was it, my time was up;

I finally thought I’d ran out of luck;

I feared that call, that knock on the door;

The moment of arrest by the long arm of the law;

I needn’t have worried as the call didn’t come;

I really do think this is one battle I’ve won;

It’s been so long now since I committed the crime;

I even convince myself, that the crime wasn’t mine.