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The Story is Dennis Nilsen, the infamous serial killer, who had a particular type of victim.

It's a well known story, brought to life vividly in this terrific drama, it's an uncomfortable watch at times, he truly was a monster.

David Tennant, I have no doubts at all that he will be winning a BAFTA for his portrayal here, he proves once again that he is an incredibly talented actor. He is incredible, but also has an uncanny resemblance to Nilsen.

There have been a few real life dramatisations, to think of White House Farm, and a few others, this is arguably the best of them. Mays and Watkins are great also.

Terrific,10/10.

Possibly the greatest role David has played to date. Utterly creepy whilst deadly smart. A gripping drama that will make you really question what mankind is capavle of at the worst of times.

I've seen documentaries on this sicko in the past but nothing compares to a great dramatisation of a true story. And David Tennent's performance deserves all the awards. ITV is way ahead of the BBC in these dramas recently.

David Tennant's portrayal of Dennis Nilsen is chilling. His resemblance to the serial killer is frighteningly uncanny. This is yet another masterclass in acting from Tennant who really can perform any role he is given at an extraordinarily high level.

I know - he is a great actor. But this series proofs more. Because he gives a brilliant game of nuances , fascinating, off course, but , more important convincing in the most creepy way. Portrait of a serial killer is the soft definition. But you feel , slice by scene than it is more. A high demonstration of unique science to explore the character in fair and precise manner. In this case, the performance of David Tennant becomes a story itself.