Put my thoughts in order for the last two episodes, but I got my suspect list on lock. I've been through this a couple times and I am very confident in this.
F0RNEUS'S MURDERNIVAL OF STUPID: THE LIST-ENING
Suspect Numero Fivo: Jake and Bake.
FOR: Jake at first appeared to be the typical bland doosh, sidekick of NuBilly Loomis and general waste of a character slot. Until he got hidden depths, which involved setting up his partner in blackmail to die, reviving a blackmail plot like a true doosh, and manipulating Brooke emotionally. Also tried to get in her pants using fear of death as an excuse. Scream is not averse to having a killer attacked. 3 films outta 4 pulled that move, and the Jake-ning McDooshbro's stabbing at the bowling alley (OFFSCREEN) is mighty suspicious. From bland jock to creepy manipulative jackhole...He's Number 5 on the list.
AGEINST!!!: If Jake was part of the Brandon James murder team fun...would he really need to set Will up at the mayor's? Nah he'd just cut him. Furthermore it appears that his story threads have dried up...
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Suspect Numero Quattro: Seth Bran(don) Son.
FOR: Sure he's just been arrested. Does that make him an innocent victim? Hell nay! Think about it! Seth Branson is Seth Palmer, teacher and official fiddler of late teens girls.Possibly murderous fiddler too. Spying on the town with two apparent accomplices...Nina Patterson aka Queen Bee of Lakewood and winner of
"Lakewood's Best Sliced Carotid 2015" and good girl Riley Marra. Victims uno and quattro. Hmmm. Knife and phone in the classroom, AND the slicing of Brooke's arm muscles in the theater could be a clever way to get an accomplice out of the way, once his purpose has been served. Use his past as a murderous doosh in another town to blackmail him, into helping disposing of two of his little spies...And you get a good potential Visage of Phantom suspect. Plus he's one of the two suspects on this here list, that was never attacked or seen on frame with the killer.
AGEINST!!!: He's been arrested. Red herrings tend to get arrested near the reveal. Plus he's having sex with an underage girl. Which makes him an unlikable creep, and killers are never unlikable creeps. For some reason. Sympathetic villains yo! Creeps? Yes? Unlikable? Nevah!
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Suspect Numero Treecko: Noah "Randy 2.0" Foster
FOR: Yes he was my suspect number 2. Is such a downgrade possible? Yes it is! Think about it. Classic rules of slasher whodunit tells us that a good killer can be put in a creepy situation that looks like a killer attack....but it's not. But hey, you felt scared for that person...Off your list! But should they be? NAY! This whole Noah swims with Brandon James scene, was a red herring. Forehead blood? Hey it was paint! WAS IT? Noah is a massive fanboy of Brandon James. His Dallas Cowboys...Sure his gal-pal Riley died on the phone with him...Sure he lost his knife-stick to Ghostface...But was he ever attacked or been in a scene with the killer in a scene not related to anyone else? Nah... He's always around when Emma and Audrey are investigating S̶i̶l̶e̶n̶t̶ ̶H̶i̶l̶l̶ abandoned places of Lakewood. He always figures out where the killer will be, with his tech-savvy...Skills that the killer sure uses...Spying on Nina with her cam and all! Noah screams crazy fanboy who would LOOOVE to help a maniac related to Brandon James. Noah sure loves Audrey though....He's always with her and shares a lot with her. Shame her girlfriend got murdered though...Unless Noah whacked his competition.
AGEINST!!!: He's Randy! The meek nerd is not the killer unless it's made apparent at the beginning of your movie that the nerd will/has come back to even the past. He did feel sad for Riley's death. And what would Season 2 be without his quips on PLL and The Faculty?!
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Suspect Numero ZapDOS: Kieran "Billy Loomis" Wilcox
FOR: I really didn't suspect Kieran for most of the show because he felt too obvious. Like...WAY TOO OBVIOUS. Dude McPerfectHair came into town as the dark newcomer with the mysterious past...And when said past never got explained, I got the feeling it'd be a Chekov's Plotpoint. His mother and stepdad's deaths will probably come to light soon in a very
"Someguy in a Brandon James mask stabbed them with a corkscrew" way. Kieran is just pure shifty. He kissed and then bedded Emma. Got between her and Will, and always throws suspicion around, like Mickey did in Scream 2. He tried to give Emma a gun which she refuses. Chances of a gun with Emma's prints getting found near a body soon? Pretty high! He's never around while the killer is there, but is always
"Exact time it'd take to stack a poncho, mask and knife in a container" seconds away though. He screams murderous maniac IMO. And now like we just saw, he knew Nina....and late reveals like that are always important. And the promos haven't been spoiler shy. Will's meeting with a trencher was everywhere before....
AGEINST!!!: Can't figure out a motive for the guy. Jake is a manipulating psycho even without the murders...Branson is prime blackmail material. Noah is a fanboy of Brandon James.
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Suspect Numero Ghostface: Piper "The killer" Shay.
FOR: She did it. 100%. Piper rolls into town with actual sympathy for the dead, and sticks around Emma's coffee shop with pearls of wisdom like "My dad was murdered and they never found out why..." and other moments of "Missing dads are sad". Now that we know that Brandon James 1) Had a child with Daisy 2) Probably didn't hurt anyone in the past....It's clear that Piper is the one character with the skills to figure out her history. The killer knows all about the town's past, Daisy's child (EVEN HAD THE X-RAYS!) and seemingly wants to bring attention to the Brandon James section of Lakewood's history. The murders scream bringing attention to an injustice, with some of the victims being killed to please/coerce an accomplice (Branson or Kieran for example). But Piper being the killer necessarily means there's a second one. Pretty sure it's one of the four wackos up there. Which coincidentally, she could totally figure out and recruit, with her investigative skills. And Daisy is myopic....and guess who also is?!
AGEINST!!!: Nada. She even gets a wake-up moment from an attack by Ghostface with nothing to show except mild annoyance.