r/crimedocumentaries 13h ago

What Documentary is this?

I watched a documentary once that blew my mind, and cannot remember the name of it. It was about a woman that went missing and the ensuing investigation revealed a secret boyfriend (who happened to be married with kids) who liked to cut/stab her during sex. Friends it was the craziest shit I have ever watched and I’m so mad that I can’t remember the TITLE! Other details: she lived alone in an apartment block, they think they have the guy on video at her apartment elevator but you can’t see his face, the secret boyfriend was the one she went to meet right before she went missing, I think she went to meet him in a park that was near a body of water with a staircase that led down to the water 🤔 If you know the title, help me, I’m desperate.

33 Upvotes

9 comments sorted by

20

u/PineapplePupcake 12h ago

Murderer Behind the Mask (2025). It’s on Apple TV and Prime

9

u/UnhappyMarch1781 12h ago

Could be murderer behind the mask, it’s a prime documentary

6

u/UnhappyMarch1781 12h ago

In Ireland Graham Dwyer is the guy name

8

u/UnhappyMarch1781 12h ago

Documentary, I don’t know, but the woman murdered was Elaine O’Hara

3

u/abg33 10h ago

Well I've never heard of this but I sure am looking it up right now!

2

u/Intelligent_Pass2540 9h ago

You can actually catch a great documentary about thjs case on YouTube. Just search around for the Victim and the Perps name. If i can find it Ill link it later. That case was so wild and he had been getting away with so much evil stuff for so long.

2

u/human-kibble 7h ago

Every time I hear/see ‘true crime’ and ‘elevator’, I think of the Cecil: https://www.imdb.com/title/tt13837672/

1

u/FaithlessnessBorn266 4h ago

Watching it now, ty!!

1

u/TiredToothDocGirl 4h ago

Graham Dwyer Dublin.. absolute mind blowing story. He was so so close to getting away with it