There is an "Easter egg" in the credits of MK Ultra. Follow the extra letters in words in the opening titles and hidden letters in major scenes of the movie. In the end credits the extra commas in code help finish the hidden message, simple cipher and scramble. Perfect treat to put this in a film like this.
Alon Aboutboul (Townsend) plays a CIA Agent working with a doctor who provides LSD & other drugs to patients as an experiment. In "Snowfall" (2017-2022) he played Avi Drexler, a dealer who sold drugs to the CIA in the 1980s. M-Dub, #BlackSiskelandEbert