I am deeply fascinated by Jeff's obsession with dead siblings. It just happens far too often to be a coincident, like, Teen Wolf is drenched in Tragic Dead Siblings and usually paired with a theme of guilt. Hell, the majority of siblings are already dead before the show even starts.
Laura's death haunts not just Derek but the whole narrative of season 1. And though her dynamic with Cora is entirely unexplored, Cora does show resentment toward Peter for Laura's death. And though in the end Cora survives, she too nearly dies and is written out fully with no further mention even as she survives.
Peter and Talia's relationship is so messy and deserves it's own post, but at its heart, Peter too has a dead sibling.
Isaac's older brother, Camden Junior, died in the army before the show even started, leaving our abused orphan also with the loss of a sibling.
Boyd's dead sister? I am so mad that Alicia isn't actually explored. They just randomly dropped "Yeah, Boyd is burdened with guilt because his younger sister died when he was a little kid and he was supposed to watch her when they were skating but she died" and... never dove deeper into that.
Malia is burdened with the guilt over her adopted mother and sister's deaths.
Ethan loses Aiden on-screen and it chases him off the continent.
Mason turns into the Beast because he is a chimera, because he absorbed his twin in the womb.
Valerie and Hayden? I mean, Hayden died. That's a very significant thing that happened in 05x10, even if she gets resurrected after, she very much did die.
Gerard's brother Alexander gets a whole flashback scene in Motel California so we see how he kills himself.
And though I don't think we ever got definite confirmation that Kate died for real, Kate's supposed death at Peter's claws is kind of a big plot-point (and I will continue arguing that she should not have turned into a were from that. Peter ripped out her throat. You don't exactly live long without your throat. How did the 'deep enough' dig of claws even have time to take effect and then to fully turn her before she died?). Either way, Chris did attend his sister's funeral.
Theo killed his sister Tara, which is fascinating, because you have all these characters who blame themselves for their siblings' deaths that were out of their hands but you have one of the two only people who actively killed their siblings and he is very notably not blaming himself for any of that.
Marie-Jeanne kills Sebastien to kill the Beast that he became.
Brett and Lori die together.
Marin and Deaton are the only set of siblings to make it out of that show alive, which still baffles me because before Marin appeared in season 3B, I had been fully convinced Deuc killed her in 3A.
I'm just incredibly fascinated by how many dead siblings there are in this show and how only two sets of siblings live - though one of those had very much died previously and then been resurrected.
