Grieving the suicide of a friend, L. FRANCES HENDERSON heads to Las Vegas, the suicide capitol of the nation, to seek answers. There she learns about the shocking death of local teenager who leaped from the roof of the city's tallest casino. While investigating the suicide epidemic further, she finds that the city is also burdened by a national problem scrambling to bury decades of nuclear excess in a nearby mountain. Based off the critically acclaimed book ABOUT A MOUNTAIN by essayist John D'Agata, this film artfully maneuvers between two stories about burgeoning with existential questions. THIS MUCH WE KNOW masterfully links these seemingly disparate subjects of self-annihilation and environmental issues into something supernatural, unforgettable, and transcendent.