Trouble is, they don't agree on who it is.

"Riverdale" Season 2 has been dropping characters like "Game of Thrones," with the first two episodes both ending with surprise murder/attempted murders, in addition to the shooting of Archie's dad Fred, who (thankfully) survived.

The late Ms. Grundy, and the alive Moose Mason and Midge Klump, all appeared to have been attacked by the same guy who shot Fred. But whodunnit?

"Riverdale" viewers are on the case. They've been piecing together clues, rounding up a list of suspects (including Hal Cooper and Sheriff Keller) and sharing theories online:

It's totally Smithers.

Just kidding. Currently thinking it's the long-haired Serpent guy, but -- whoever it is -- the next big question is going to be why? Also, is the killer done, or is someone else next?

It's possible some of those fans will be correct (and they will let you know they were). It's also possible they're all wrong and the killer is not so obvious. For the time being, though, all men with green-ish eyes and bushy eyebrows are on notice.

"Riverdale" Season 2 continues Wednesdays on The CW.

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