A rarely seen great early work by Koji Wakamatsu (b. 1928), master of the pinku eiga, or pink film – the edgy soft-pornography so popular in Japan during the Sixties and Seventies – Secrets Behind the Wall caused a scandal at the Berlin Film Festival for its eccentric yet frank exploration of sexual deviancy. Using a Tokyo apartment complex as a metaphor for a sexually repressed society, Wakamatsu peeks into the building’s dark inner chambers to discover multiple stories of neighbors acting out their darkest psychosexual fantasies. Secrets showcases the complex mise-en-scène and black and white widescreen cinematography favored by Wakamatsu, using interior architecture to create a series of nested framing devices. Shown here for the first time in the United States, Secrets Behind the Wall’s feverish and unbridled vision of human sexuality remains shocking and fascinating.