A new true crime documentary called 'Memories of a Murderer: The Nilsen Tapes' arrives on Netflix today. Here's everything you need to know.

'Memories of a Murderer' depicts British serial killer, Dennis Nilsen, who confessed to killing 15 people in 1983. His crimes were first exposed by a clogged drain.

Over a five-year period between the '70s and '80s, he picked up vulnerable young men and boys and lured them back to his home. There, he strangled them, before disposing of their bodies under the floorboards.

'Memories of a Murderer' includes unique access to personal archive that was left in Nilsen's cell after his death.

It delves into over 250 hours of never-before-published cassette tapes of his private recordings.

We learn of how Nilsen grew up from a young boy in a quiet Scottish fishing village to a cold-blooded murderer hunting in the streets of London.

Aside from Nilsen's own voice, there are also interviews with police, journalists, survivors, and bereaved families in the doc.

'Memories of a Murderer' comes from the makers of 'Don't F**k with Cats'.

It is 85 minutes long and on Netflix now.

Watch a clip from the documentary below.

Here's the trailer for 'Memories of a Murderer'.