“The stakes have never been higher,” Syfy’s promo for the midseason premiere of Warehouse 13 promises. And hey, speaking of stakes — why is Myka slugging Buffy‘s James Marsters?!

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TVLine has an exclusive first look at the new promo, which in addition to the aforementioned punch (Marsters guest-stars as Professor Sutton) also finds formerly evil Artie still with the dagger in his chest, Mrs. Frederic reminding us of the pandemic in play with the release of the Chinese Orchid and Pete and Myka wondering how/if they can move on from their latest crisis.

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Check it out here, then tune in Monday, April 29 at 10/9c for the back half of Season 4.