Satan's Stratagem (Czech: Ďáblova lest) is a Czech crime mystery miniseries that premiered on Czech Television in February and March 2009. It was written by Arnošt Vašíček and directed by Jiří Strach.

Commissioner Sumara and his new colleague Šímová investigate an attempted ritual murder that has some connection to archaeological excavations at the Podlažice Monastery. They ask religionist Dr. Runa for help. Members of Schola Gregoriana Pragensis appear in a small roles of Benedictine monks singing Gregorian chant.

The series is sometimes compared to The Da Vinci Code, and Dr. Runa to Robert Langdon.