The cast of Doctor Strange continues to expand, as one more actor has joined the lineup of Marvel’s mystical superhero film in — surprise, surprise — yet another mystery role. Transparent star Amy Landecker is the latest addition to the cast, joining Benedict Cumberbatch’s Sorcerer Supreme in what’s shaping up to be Marvel’s best cast yet.

To be fair, we said the same of Guardians of the Galaxy and Ant-Man, but the studio keeps upping the ante with the casting choices for each new film. The Wrap reports that Landecker has signed on to star in Doctor Strange, joining a cast that also includes Chiwetel Ejiofor as Baron Mordo, Tilda Swinton as the Ancient One, Rachel McAdams, Mads Mikkelsen and Michael Stuhlbarg (who appeared with Landecker in A Serious Man).

Landecker currently stars on Amazon’s critically-acclaimed series Transparent as Sarah Pfefferman, and has also appeared in Enough Said and Project Almanac.

No details on her character have been given, so feel free to speculate away. Last we heard, McAdams might be playing Night Nurse, a rumor reinforced with comments made by former Daredevil showrunner Steven S. DeKnight. Not much else is known about the film, which centers on Cumberbatch’s Stephen Strange, a skilled neurosurgeon who discovers a world of mystical forces and powers following a life-threatening car accident.

Ejiofor is playing Baron Mordo, a character who studies under the Ancient One with Stephen Strange, and Stuhlbarg is playing Dr. Nicodemus West, a rival neurosurgeon.

Scott Derrickson is directing the film from a script by Jon Spaihts (Prometheus). Doctor Strange hits theaters on November 4, 2016.

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