And then, in the final minutes, a key piece of evidence was revealed to be fabricated, the motivations of a character we believed trustworthy were brought into question, and an act of vigilantism was on the verge of taking place -- cut to the credits and a fanbase that started to resemble an angry mob.
While the ending maddened some viewers, it was in line with the Danish series on which "The Killing" is based; it took two seasons to solve its mystery. Creator Veena Sud has promised the identity of the killer will be revealed at the end of season two, which kicks off this Sunday on AMC at 8pm, after unapologetically explaining last year that viewers can look at the show as either "a left-brain journey where you're just connecting the dots of who the suspects are" or "more of a holistic journey where a young girl is murdered these are the potential suspects and this is why."
Holistic or not, "The Killing" introduced a solid selection of potential suspects from different segments in Rosie's complicated life in its first 13 episodes, and has made it clear that no alibi is airtight. Here's our list of the five most likely suspects, which includes spoilers from the first season.
And if you haven't caught up on "The Killing," we've got five first-season DVD sets to give away -- read through to the end of the article to find out how to enter.
Read about the suspects -- and then give us your best guess for a chance to win.
5. Jasper Ames (Richard Harmon)
Rosie's ex-boyfriend is like Chuck Bass crossed with Kip Kinkel. The son of a real estate tycoon, Jasper has an infinitely long leash for a high school kid. His father, who's quick to call in legal counsel whenever he's in trouble, doesn't seem to be around the rest of the time, leaving Jasper free to party in their spacious empty house on Mercer Island and hang out with his meth-dealing pal Kris Echols. We first see him blankly gunning down characters in a first-person shooter while an older woman he picked up at a bar stirs in his bed upstairs, and later learn he and Kris had a questionably consensual encounter with Rosie' best friend Sterling Fitch at a Halloween party the evening of the murder. It cuts into his window of opporunity, but Jasper's dead eyes and disdain for the world suggest he'd kill someone just to see how it feels.
The sleazy billionaire can't not be a suspect. Tom's been supporting Darren Richmond in his campaign against the current mayor because he doesn't like the latter's waterfront development plans -- he has his own aims to build a stadium in the spot. Darren's interactions with the self-indulgent entrepreneur have been portrayed as deals with the devil, and there are suggestions that he won't like it when Tom comes calling for what he feels he's owed. In addition to his power plays, Tom has a thing for call girls, especially on the younger side -- we see that he's stocked his ceiling pool (see? he must be evil) with ladies from Beau Soleil, the high end escort agency for which Rosie may or may not have been working. If he got bored or violent, it doesn't seem out of character to believe he would have discarded his plaything in such an gruesome way.