Behind Her Eyes: All Of The Clues You Missed That Gave Away The Plot Twist Ending

Let's start with the most obvious. Adele's heroin addiction might not have been obvious until episode four, but that's the biggest pointer to Rob in the entire season. As we know, Rob meets Adele in a rehabilitation centre where he is being treated for addiction – you don't really know what he's addicted to until the same episode when you see him injecting heroin himself. But, there's another Easter Egg, here – when Adele goes to buy drugs from a random London estate and gets punched in the face. At the time, some might think she did it purposely to plant the seed to Louise that David is abusive – and thus destroy their affair – but perhaps it was genuinely just Rob trying and failing to buy drugs the whole time. We also see Adele buy something from David's patient, Anthony, after the failed attempt – making the pattern of addiction clear.

So, this is more of a clue that astral projection was a running theme in the show, but nonetheless it gives away the ending. According to director Erik Richter Strand, many of the scenes between Louise and David were filmed from particular angles to make it appear as if someone was watching them. It's meant to allude to the idea of astral projection, but of course no one would guess that off the bat – so we can't blame ourselves for missing that one.

The only time this astral projection becomes obvious is in episode five, when a blue aura appears as we watch a scene of Louise – showing that someone is watching her from a dream as she was doing to her son moments before. You assume the aura is Adele, but in later flashback scenes you see that Adele's original aura is actually pink, and Louise's green. Rob's however, is blue. So when we're watching that blue aura watch Louise, that's a clear sign it's Rob's soul – not Adele's.

Rob's diary entries narrate much of the series, explaining his memories of Adele and David from his point of view. When Adele gives the diary to Louise, while Rob's name is on it there's a sense of confusion about why Adele has it, what purpose it serves and why Adele would let her own story be told through Rob's perspective. Looking back, if Rob was Adele the whole time that makes perfect sense – we were actually seeing the story from his perspective the entire time.

It's with that in mind we probably should've picked up on how strange it was when Adele wrote her own letter to David. When Adele decides she has no choice but to end her life, she writes a note saying 'This all started with fire, so it's only fitting it ends that way.' Not only are we not familiar with Adele's narration, in actual fact, we know that young Adele was traumatised by her parents death in a fire. Particularly, that she was astral projecting when it happened, so it seems unlikely she would decide to die in the same way.

This is another you won't have clocked until the final episode, but in one flashback scene where Rob meets David, he cooks them an extravagant meal. He is clearly a gifted chef, while Adele and David simply watch. Throughout the series, Adele often cooks extravagant dinners for David just as he arrives home – and yet in the flashback scenes Adele doesn't appear to know how to cook. After all, she's always been rich – as she says – and had servants do everything for her. She's still rich years on, so while it's plausible she learned to cook you can't mistake Rob's feasts looking back.

We know Rob is attracted to men from the first episode, when he tells one of the rehab workers how much he 'loves cock' – but the series attempts to throw us off by implying he is in love with Adele. Actually, it's clear now he was in love with her life, and obsessed with wanting to be her. From the first time he meets David, Rob's crush on him is clear. Some might perceive it as jealousy, but as far as longing stares go there is an absolute romantic vibe between them. Just the scene in the kitchen is enough to prove that, particularly once Rob becomes more complimentary of David. And then we can't forget the scene where he astral projects to watch David and Adele have sex, focusing only on David. At that point, the crush is obvious – what's not obvious is how far he's willing to go to get what he wants.

Where that does become clearer though, is in his scenes with Adele where he talks about how perfect her life is, and how lonely he is in comparison. He tells her she has everything he could ever want, and that will never be his reality – he knows their friendship can't continue as is, that she'll outgrow him. Looking back, his history with addiction, impoverished upbringing, poor family life and need to escape his surroundings all plays into exactly why he would want to steal Adele's life.

Again, another clue for the astral projection theme rather than Rob being Adele – but it makes sense now we look back. Adele explains multiple times that when partaking in astral projection, you can only go to places you've been before – places where you have 'visualised the details'. When Adele visits Louise at her home, she walks around every room slowly, taking in every last detail around the house – eerily staring in a way that makes you wonder what she's thinking. Well, we later know it's so she can watch Louise from wherever she astral projects, or should we say 'he'.

In a lot of the scenes of Adele and Rob in rehab together, his obsession with escaping his life is obvious. He asks Adele what it's like to love David, and be loved by him, he eludes to not trusting anyone and being betrayed his entire life. He even shows the manipulative side we come to see from Adele in the future, often planting seeds in her mind that David is too old for her, not good for her or just after her money – the very same manipulative tactics he later uses to convince Louise David is abusive. 'Everyone's dull, everyone's predictable, everyone is out for themselves, me included,' he says in one particular scene, before talking about how amazing Adele is. 'I would do anything she told me to, but of course now I've said that she can never read this.'… And she never does. What we learn about Adele is important too. As a teenager, she's kind and loved by everyone. Rob details how selfless she is, and she appears wholeheartedly in love with David with a relative lightness given all of her trauma. In the future, Adele appears erratic, sometimes eerily calm before suddenly screaming and shouting obscenities. That tendency to fly off the handle is simply NOT the one we knew of Adele when she was young, but is much more similar to Rob's temperament in flashback scenes instead.

In the flashback scene were Rob meets David for the first time, we see him cowering in the doorway to the mansion while Adele waits excitedly on the driveway. He remains there, staring out at David's car coming up nervously, watching them as they hug hello. His nerves are palpable. Cut to another flashback scene, where Adele is waiting for David to arrive after Rob's 'overdose', she is doing the same thing – waiting nervously in the doorway, barely moving from the spot until David's car pulls up. Knowing what we now know, that was Rob's first interaction with David in Adele's body and so his mannerisms are still the same.

Throughout the series, David constantly references not really knowing his wife, or her not being herself. We know they've been together for over 10 years at this point, and assume perhaps she's just changed. But quite literally, she is not the woman he intended on marrying. Rob has been in Adele's soul for the majority of those years, so it seems strange he's only reaching his breaking point with not quite knowing her now – but either way, it makes sense as to why David can't understand how Adele is different than when they first met, or how she knows so much.In one particular scene, David tells Louise that he couldn't ever get over how callous Adele was that her friend had overdosed. He thought they would get through it together, but Adele seemed not to care. Well, knowing Adele is actually Rob in a new body, it's clear why he didn't care – because he's still alive. In another, when Louise and David are talking about 'the girl he saved from the fire', she asks what happened to her. 'I'm really not sure,' David says, hauntingly. At the time, we assume David just doesn't want to tell Louise it was his wife he saved, for whatever reason, but actually, he really isn't sure what happened to that girl – because in actual fact, her soul is dead.