The Psychotronic Film Society’s intimate, ongoing Wednesday night series of underappreciated films from around the world continues Oct. 10 at The Sentient Bean coffeehouse with the forgotten 1969 Mexican fright flick “El libro de Piedra” aka “The Book of Stone.” An exceedingly creepy tale of a mysterious garden statue of a young boy that appears to exert a supernatural influence over the young daughter of a wealthy family, the less said about the specifics of the plot the better. It’s a minor gem of psychological horror that is virtually unknown outside of Mexico (it was never shown in theaters in the USA and has never been released here on home video), yet is well-known in its country of origin (where it was actually remade as a big-budget shocker a few years back). The PFS will screen a fully uncut Mexican print of the film in spoken Spanish with English subtitles. 8 p.m. showtime.