Every Leon Theremin Film & Series, All in One Place on Castle

Whether you first noticed Leon Theremin in a mass entertainer, a quiet character drama or a headline web series, this filmography gathers every on-screen credit on Castle — theatrical releases, guest spots, franchise entries and full seasons in one scrollable grid.

Scroll the filmography grid below to compare posters, ratings and runtimes, then jump straight into HD playback. Hindi, Tamil and Telugu dubs are available on many titles, and the lineup refreshes as new Leon Theremin projects go live.