These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: Atropos is one of the entities responsible for cutting the life threads of the mortals whose time has come. But unlike the other entities like him, Atropos absolutely despises humans for being such short-lived creatures, and takes great pleasure in ending their lives. So in addition to doing his job, Atropos goes after people whose fate isnít decided and causes them to die horribly, which he has done enough times to fill an entire cave with trophies of his victims. When his boss, the Crimson King, wants him to kill a young boy before he grows up to oppose his plans, Atropos uses this opportunity to harm as many people as possible. He proceeds to corrupt a nice family man called Ed Deepneau into becoming a wife-beating extremist. Under Atropos' manipulation, Deepneau gets together with like-minded maniacs and assault a woman care center, where they murder dozens of people, as a distraction for his real plan: to have Deepneau crash with a plane full of explosives onto a pro-abortion rights rally that the kid will be attending with his mother, killing them along with the other two thousand people present. Along the way, Atropos has several of the protagonistís friends killed just to piss him off, and taunts him about it. Finally, when his plans are foiled, Atropos tries to kill Deepneauís six-year old daughter (who the hero befriended) just to get back at him for humiliating him in front of his boss.
Harsher in Hindsight: Crashing a plane into a building as a terrorist attack became retroactively uncomfortable after 911.
Rape and Switch: Hinted at with Helen Deepneau, although "abuse and switch" might be more accurate based on the evidence at hand; either way, she's openly if discreetly identifying as a lesbian by the end of the book, which the narrator puts down to her abusive marriage to Ed.
Alternative Character Interpretation is possible, though: Ralph is well-meaning but somewhat old-fashioned, and very likely an Unreliable Narrator, and it's entirely possible that she was actually a closeted lesbian throughout her marriage, and its traumatic breakdown changes her feelings about coming out rather than her whole sexuality. She certainly seems a lot happier once she's out even though the woman she's implied to have fallen in love with has been murdered.
Fridge Horror (also Fridge Brilliance): If you are paying close attention throughout the film, you will notice that 1) Ellie closely resembles Kay. 2) Kay's letters are still on Finch's desk at his apartment in Umkumiut, not at his cabin by the lake, when Dormer kicks in the door. This means that when Finch calls Ellie to meet him at the cabin so he can give her the letters, he has some other motive for calling her there. 3) He leaves the drawer open so Ellie can see the dress, giving him an excuse to silence her. All this taken together suggests that Finch wanted to kill Ellie the moment he saw her, either because she looks like Kay or because he knows she suspects something.