So many questions (Spoilers!!)
I finished watching this today and I loved it, but the more I think about it the more questions I have... There seem to be so many plotholes and loose ends and I don't think I can go to sleep without posting this first:
Cara
I guess we're supposed to think Henry met Cara on that app thing, she stole the trophies from his house and then Henry went after her so he wouldn't get caught.
But why would Henry be on the app in the first place? It's supposed to be an app for people who want to cheat on their partners, while he doesn't seem to be in a relationship.
And then how did he find her? They showed someone asking about her on some website, I'm assuming that's supposed to be Henry asking. But even if he found out her real name, how would he know she was at the club? Marcella had to trick Cara's friend into finding out where she was, so how would Henry know. And even then, what was his plan? To wait outside for her to walk out alone so he could run her over with a car? If I remember correctly, the car came from around the corner as she was crossing the street, so did he just get lucky?
Or was Cara killed by another person altogether? I don't think Henry ever mentions her at all when he is being interviewed after he's been caught.
Boarding school
Sooo Marcella is supposed to have quit her job so she could be a stay-at-home mom. But then the kids get sent to boarding school. So there's no reason for her to stay at home? Of course they never really give any details about how long the kids have been attending boarding school, but you'd think them not living at home is a better reason to start working again rather then her husband leaving her.
Grace
Why did Marcella move the body? The timelime seems to be: Marcella visits Grace, leaves again at some point. Then Henry kills Grace and leaves the body at her home. Then Marcella comes back and moves the body? Why would she go back?
The only sort of explanation I can think of is that she had another blackout, didn't remember what had happened when she visited Grace. And then when she went back Grace was dead so she panicked and moved the body. And then she is in the bath and she didn't remember what happened AGAIN and went back AGAIN and panicked AGAIN? So double blackout? And why was she covered blood anyway? Whose blood?
El-Sayed brothers
Who killed Hassan and why? Mo obviously thought Marcella killed him, but the only thing Marcella seemed to be sure about not doing was killing him. Henry didn't seem to know anything about the brothers, nor can I think of how he would have found out. Even then he wouldn't have a reason to kill Hassan, since he only saw Marcella and not Henry.
And what happened to Mo? The last we saw of him, he had Marcella tied down and seemed pretty serious about avenging his brother. And then she wakes up with no other injuries than a little cut on her neck and any evidence that Mo was ever there seems to be gone.
May
Why did Henry kidnap May? He killed Beth because he wanted to set Matthew up and she was connected to him. But he didn't have a reason to kidnep May. If May had actually been staying over at Beth's that would have given him a good reason...but she wasn't. What was the plan there? Also he says that he didn't plan to kill her, but then why take her in the first place? The whole reason for him killing anyone besides Grace is to hide the fact that Grace was the real target. Kidnapping May just doesn't fit with that. Also why didn't the Dad just drop May of at Beths when he had to go to work?
I'm hoping someone can shed some light on this because it was otherwise really enjoyable to watch.