Sarah Michelle Gellar

Ringer returns Tuesday (9/8c, The CW) with even more death, adultery and drama than the season's first half. With Siobhan (Sarah Michelle Gellar) back in New York, it's only a matter of time before the sisters cross paths. When will it happen? Get the scoop on the twins' past, present and future: 

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Siobhan's back! Now that Bridget's twin is back in New York, she'll quickly put her as yet unknown plans into action. "It came off of the idea that if you want something done right, do it yourself," executive producer Nicole Snyder says. "Siobhan has been plotting from afar and she couldn't get what she wanted, so she had to come back and do it herself."

And she's not happy to see Bridget happy: Siobhan will come to the realization that letting Bridget take over her life may have backfired now that Bridget and Andrew (Ioan Gruffudd) are happily (fake-)married. "She doesn't like to see her sister succeed where she failed," Snyder explains.

The twins' past, revealed: "There's one singular incident that drove this gigantic wedge between the sisters and we're going to discover what that is," executive producer Eric Charmelo says. "And why Bridget is on this path of redemption and why Siobhan is on this path of revenge. It'll be during February sweeps."

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The other men of Ringer: Both Machado (Nestor Carbonell) and Malcolm (Mike Colter) will step into the spotlight in the season's second half. For Machado, we'll finally learn why he's so personally invested in the Macawi case, while Malcolm's getting a new job that brings him closer to Bridget. 

People are going to die: With Siobhan back in the Big Apple, her secret plans will put many of the main characters in danger. "It gets worse than the first half," Charmelo says of the impending blood bath. "Lots of bodies. Anyone and everyone is fair game."

Ringer airs Tuesdays at 9/8c on The CW.