Saoirse Ronan is having a big fall with two major films coming to theaters. First is “The Outrun,” an adaptation of Amy Liptrot's memoir of alcoholism and recovery that she stars in and produced alongside her husband Jack Lowden.

Saoirse Ronan is brilliant in 'The Outrun,' a film by Nora Fingscheidt about a woman battling alcoholism. It's based on a memoir by Amy Liptrot.

Blind drunk at closing time, Rona — a bright, late-20s graduate student majoring in biology — has again pushed her luck and, literally kicking and screaming, provoked the bartender into tossing her out of a London pub onto the sidewalk.

“Outrun” rates as a personal triumph for Ronan, 30, who carries the film and is in every scene. It was Ronan’s husband, the “Slow Horses” star Jack Lowden, 34, who discovered the source material: Amy Liptrot’s bestselling memoir which Liptrot adapted for the screen.

At some point during “The Outrun,” it occurred to me that watching Saoirse Ronan act is a bit like looking into a magnifying glass: Everything somehow feels a bit clearer, sharper, more precise. This singular actor gives one of her finest performances in a two-hour study of addiction that is poignant,

Then there’s the ways addiction bifurcates her life. Rona is deeply passionate about ecological preservation. There’s nothing more she loves than the natural world and protecting it. Simultaneously, she grapples with a disease compelling her to destroy her body.