Nick Reiner, charged with murdering his parents, Rob and Michele Singer Reiner, spent much of his life battling drug addiction, an affliction that millions of Americans face.

© Constanza Hevia H. for The New York Times

Nick Reiner, charged with murdering his parents, Rob and Michele Singer Reiner, spent much of his life battling drug addiction, an affliction that millions of Americans face.

© Constanza Hevia H. for The New York Times

We must do far more to address the national crisis of addiction that leaves so many households in despair as well as danger.

© Illustration by The New York Times; photograph by Mario Tama/Getty Images

We must do far more to address the national crisis of addiction that leaves so many households in despair as well as danger.