“Teenage Sex and Death at Camp Miasma” (Mubi), the new full-length feature written and directed by filmmaker Jane Schoenbrun, is a vast improvement over their unwatchable debut movie “We’re All Going To The World’s Fair,” while continuing the trajectory of the slightly better “I Saw The TV Glow.” An homage to genre filmmaking, with a twisted sense of humor, it features a polyamorous Gen Z filmmaker unable to achieve orgasm and a ruthless killer known as Little Death (la petite mort, get it?).










