Katherine Waterston stars alongside Joaquin Phoenix in the crime comedy-drama 'Inherent Vice.' Set in 1970s Los Angeles, the film follows the story of private investigator Doc Sportello, played by Phoenix, as he investigates the disappearance of his ex-girlfriend. Waterston portrays Shasta Fay Hepworth, Doc's ex-girlfriend, whose disappearance sets the plot in motion. 'Inherent Vice' is a quirky and offbeat film, filled with eccentric characters and a complex narrative that keeps viewers engaged from start to finish.