Warner Bros. has cast the trailer toHarry Potter and the Deathly Hallowsupon the Internet.

It will also run in front ofThe Twilight Saga: Eclipsestarting this week.

Bleak-looking and stoic-sounding, the trailer is appropriately epic.

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The brief glimpses of Harry and Voldemort scrapping looked ridiculous in both standard and high definition.

The conclusion is set to appear in theaters July 15, 2011.

Both will be available in 3D, IMAX 3D, and 2D theaters.

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Hit the jump to check out the trailer and the official synopsis for Part 1.

Click over to theofficial siteto see the trailer in HD.

But there are Dark Forces in their midst that threaten to tear them apart.

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Meanwhile, the wizarding world has become a dangerous place for all enemies of the Dark Lord.

But the one prize they still seek is the one most valuable to Voldemort: Harry Potter.

Harrys only hope is to find the Horcruxes before Voldemort finds him.

And if the legend turns out to be true, it could give Voldemort the ultimate power he seeks.