Locke and Key Trailer Teases Action-Packed Final Season

Locke & Key's final season is taking viewers on a trip through time.

Netflix released the official trailer for the hit series, revealing that season three will answer questions about the mysterious house at the center of the series. In the preview, Bode Locke (Jackson Robert Scott) finds a key in the grandfather clock, opening a door to a different era. This time portal seemingly takes him back to Massachusetts in the 1700s, when Captain Gideon (Kevin Durand) was a mere human.

"This is insane," Kinsey (Emilia Jones) tells Tyler (Connor Jessup), who replies, "There's a time travel key?"

Indeed, there is.

And it seems that it will be important to learning how to defeat the menacing Captain. The preview shows him touching a glowing blue rock, with Gideon saying, "It was at that place that I merged with something of unspeakable power."

Brief scenes tease someone falling off a cliff, a car chase and a massive portal opening in the middle of the house. Suffice to say, Locke & Key is going out with a bang.

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While the trailer is short, it's clear the Captain is a formidable opponent. "Just you wait," Darby Stanchfield, who plays Nina Locke, told Decider. "All I have to say is, just you wait. He is the scariest."

In fact, the cast and showrunners think that this villain is even scarier than Dodge (Laysla De Oliveira). Co-showrunner Carlton Cuse said the writers wanted to up the ante for this season, so they pulled out the big guns. "The Dodge storyline felt to us like we played that out," Carlton explained. "Let's see who the ultimate bad guy is, and what happens to our characters when they're confronted with him."

See how the Locke family fights back when the third and final season of Locke & Key premieres Aug. 10.

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