Marvel Studios has kept a tight lid on its upcoming WandaVision spinoff series, Agatha: Darkhold Diaries. But this past week finally brought a glimpse at the mystical new show courtesy of a leaked first trailer. Images and behind-the-scenes footage hint at an adventure into spooky new corners of the Marvel Cinematic Universe.

The latest video originates from a feature included on the WandaVision Blu-Ray steelbook collection, which only came out. It's presumably intended to promote the 2024 show, but its appearance now spills some initial secrets earlier than intended.

The trailer offers a first look at Kathryn Hahn back in her fan-favorite role of Agatha Harkness, the powerful witch who's become more or less the highlight in every scene she's appeared in since debuting in WandaVision. In it, we see Hahn sporting Agatha's Halloween witch costume as well as her invented "Agnes" persona's mid-century suburban garb. The setting of Westview still factors in prominently as well.

We also get quick shots of supporting stars such as Joe Locke, potentially playing Wanda's son Wiccan. Ali Ahn, Sasheer Zamata and the legendary Patti LuPone also feature amongst an ensemble of allies and adversaries. The story will see them go on an adventure traversing the trippy "Witches' Road" dimension, accessible only to practicing magic users.