Young and disenchanted Sam meets a mysterious and beautiful woman who's swimming in his building's pool one night. When she suddenly vanishes the next morning, Sam embarks on a surreal quest across Los Angeles to decode the secret behind her disappearance, leading him into the murkiest depths of mystery, scandal and conspiracy.

Under the Silver Lake hits its stride slightly more often than it stumbles, but it's hard not to admire - or be drawn in by - writer-director David Robert Mitchell's ambition.