A Very "Grimm" Hansel & Gretel Tonight

After a week's break, NBC's Grimm returns tonight with a dark version of Hansel and Gretel (yes, a grimm version - even for this fairy tale!). 

While Nick and Hank investigate the murder of a teenager, the stakes are raised when two vagrant teens go missing.

The episode is titled "Organ Grinder" and features a creature which has an unusual use for human organs - not quite your "typical" black market donor stuff!

Hansel and Gretel (called Hanson and Gracie) will be played by Daryl Sabara (Spy Kids) and Hannah Marks.

I'm not posting the preview clip because it's a little on the gory side (visuals not violence) but you can find the main preview HERE, a couple more HERE and some promotional photos HERE.

Very curious if Grimm will be using any version of candy houses or allude to a trail of breadcrumbs...