Longtime actor Paul Reiser was more startled than anyone else when watching a clip for “Stranger Things” season 2.

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Reiser, 60, stopped by “Conan” on Wednesday to share a clip from an episode ahead of the Netflix program’s ultra-anticipated second season premiere on Friday, Oct. 27.

Actors often describe the clip they are going to share with the audience but Reiser made it very clear he had no idea what was happening.

“I myself know nothing,” he joked (Reiser plays an intelligent doctor on the show). “I understand in this clip I play a remarkably handsome guy. I’m sent in to clean up the mess that Matthew Modine did last year.”

Entertainment Weekly published their own exclusive “Stranger Things” clip on Monday, featuring Mike (Canada’s Finn Wolfhard) being interrogated over Eleven’s whereabouts.

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Watch Reiser’s reaction to the clip at the top of the page.