The motive for Henry was so poorly done. I mean we all mostly figured it was him. I called it early because he seemed too nice, but the show did genuinely trick me into thinking it was Jimmy near the end...except that they then overplayed their bluff by putting him in all the promos as the bad guy and having ominious shots of him in the episode two weeks ago.
Anyway, I was fine with it being Henry. That revelation where he murdered Trish in the wedding dress was chilling and quite well done. But his whole plan was to get to be with Abby, his half-sister, alone and happy forever. So he spent the last 5 years of his life dating, screwing and "loving" Trish, the hotter, richer girl. And gets every friend he ever had in his life to get to the island so he can murder them all. Why is his father, Wakefield for this plan? Is it just so he can kill? Some people just love killing? Well that's fine and dandy, but why not just go and kill them instead of this elaborate half-a-decade in the making scheme?
If Henry wanted Abby couldn't he have just y'know, tried to date her as they were already great friends and skip the whole mass murder thing? And if it's cause he's nuts, that is a weak excuse. Especially because he is able to demonstrate such rationality and sanity for the last 12 weeks to fool everyone on the island and apparently everyone for years. Him being a psycho is a cop out. If he is crazy enough to not realize that Abby would be turned off on the idea of loving her BROTHER who killed everyone and is holding her hostage on an island, how was he sane enough to come off as a hero who hates killings and empathize with everyone else, especially the fiancé he was living with for years. So he's sane enough to trick everybody he ever met for years. But reverts to a child after his plan works, which is the plan of a maniac?
It was weak.
I also didn't like the survivors. It was the female protagonist, her blooming love interest and the mother and child who were beyond obnoxious. Everybody knew those four were safe from the word go (well unless the killer was Jimmy, but then Henry would have kissed her riding off into the sunset). I would have liked to see either Trish or Sully make it out.
Sully actually turned into a good character in later episodes. Like Cal and Chloe he astonishingly became interesting. I thought his death scene was well done because it was such vicious and unforgiving portrayal by Henry. I thought it was horrible enough when Henry asked if his college buddy put up much of a fight and Wakefield judged him like a kid in a spelling bee. But this was his best friend since elementary school...
And after staying for him, he systematically lures the only guy who might give them a run for their money in a fight in a no-win situation where he is surrounded with a gun that is empty and then he literally stabs him in the back. Viciously executed.
But since he became kind of a hero and his talks about living from what he has learned from Cal and others, I would have liked to see him survive. Especially since he was the only one with any common sense. "Hey, here is the guy who has killed over 20 people. Let's plug him now, so he doesn't escape like he did 7 years ago and comes back to kill us." And Abby "He killed my parents so I'm going to kill him," Heroine says, "I can't. Let's leave him to the police." Poor Danny had to go because of that. Trish's death was a great reveal for Henry. Sully should have made it out and maybe Jimmy could have died in the church. It would have been less predictable that way.