Behind Her Eyes – Netflix: [no spoilers]

I saw this advertised as a 'psychosexual suburban thriller' – normally I couldn't run away fast enough – not my particular brand of cola, at all.

But a recommendation from a friend and hearing that the 2017 Sarah Pinborough novel of the same name was marketed on social media with '#WTFThatEnding' – and I was persuaded to look a little closer.

Like most people, I'm a sucker for a good ending. Preferably a twist I just didn't see coming, and let me tell you, in that respect, this show delivered in spades.

But let's talk a little more about the ending later – no spoilers, I promise – I just want to rewind a little and tell you what it's all about.

It concerns a love triangle that pans out between psychiatrist David Ferguson, his wife Adele, with a history of mental health issues, and Louise – David's secretary.

Louise is placed as the protagonist, she's the character we're rooting for. And when chance meetings with both David and Adele occur, she decides she's going to have her cake and eat it and relationships blossom separately with both of them.

It's a 6-parter and with each passing episode, the veil is lifted and David and Adele's marriage is revealed to be not as perfect as it looks at first glance.

In tandem with this, Louise suffers regular night terrors and confesses this to Adele. A fellow sufferer, she passes Louise a diary/notebook that belonged to Adele's friend Rob, with a promise that it will help to control her bad dreams.

Through reading Rob's notebook, Louise learns more and more about Adele and Rob's past, becoming friends in an institution. Adele is getting over her parents dying in a fire at her home, while Rob is attempting to get over his heroin addiction.

Despite not making a bee-line for stuff like this previously, I have to say – I found it really enjoyable. The cast was great, and the story moved quickly, with enough new information revealed in each episode to eagerly anticipate the next one.

As you begin to spend more time in the company of each character, you can see their motivations and you start to piece together what you think happened between the gaps of what you think you know.

Because while we see the story from Louise's perspective, there are other viewpoints and varying levels of reliability at play – you're never entirely sure whether you can absorb what you're watching into what you know about the characters.

As for #ThatEnding – it didn't even bother me that I knew to expect a twist. Sometimes that's the worst thing – when someone tells you there's a twist – you spend every moment watching for a clue in the dialogue, or a glance between characters that might tell you what it is. Trust me, you can look all you want. You won't see this coming.

There's a film I had in my head up until episode 5 I think. I thought the twist might appear to be something similar to that, but it wasn't. Which is a great testament to the writing that you think you're watching something you're not.

I think the ending will really split Behind Her Eyes' audience. I thoroughly enjoyed it, but I can see how it might annoy a lot of folks too.

When you deconstruct it, you might think there are some unusual views at play here – and I'm assuming that there could be a second series on the way, because NO drama EVER ends like this anymore! It's dark, it's messed up and the implications for what happens after the credits roll just don't bear thinking about.

If you've seen this and you want to discuss, or want to know more about it – come and talk to me on Twitter. I wonder if you had the same film in your head as me, until the rug was pulled from under you in the most un-guessable way!

Interested to hear what you think when you've seen it!