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December 12, 2011 at 04:53 PM EST

We have two pieces of news for fans of NBC’s Grimm.

First, Spy Kids star Daryl Sabara is going to guest star on an upcoming episode of the Friday night series. Second, the show is going to tackle the popular fairy tale of “Hansel and Gretel,” which ought to make for an intriguing hour. Hannah Marks, from USA’s Necessary Roughness, will also guest star, playing Sabara’s sister.

The pitch: “Hanson (Sabara) and Gracie (Marks) are homeless teens trying to survive in the streets of Portland, when they unexpectedly get caught up in the creature world’s deadly black market of human organ dealing.”

The episode’s title: “Organ Grinder.” Yikes! Still, losing body parts arguably still better than a witch trying to roast you alive in her oven like in the original story. What will Hanson and Gracie use instead of the trail of breadcrumbs, you think?

Read more:

‘Grimm’ recaps

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