An episode from our show's early days: Stories about what happens when strangers are kind — and when they're not.Prologue: Brett Leveridge was standing on the subway platform when a man walked by, stopping in front of each passenger to deliver a quiet verdict: "You're in. You're out. You can stay. You—gotta go." Most people ignored him. But Brett found himself hoping for the thumbs up. (5 minutes)Act One: New York City locksmith Joel Kostman tells the story of an act of kindness he committed, hoping for a small reward. (13 minutes)Act Two: In 1940, Jack Geiger, at the age of fourteen, left his middle-class Jewish home and knocked on the door of a Black actor named Canada Lee. He asked Lee if he could move in with him. Lee said yes. In Lee's Harlem apartment, Geiger spent a year among many of the great figures of the Harlem Renaissance: Langston Hughes, Billy Strayhorn, Richard Wright, Adam Clayton Powell. (11 minutes)Act Three: How two next-door neighbors start treating each other badly, and how their feud becomes an all-consuming obsession. Paul Tough reports. (14 minutes)Act Four: For five weeks, a singer named Nick Drakides stood on a stoop in the East Village, singing Sinatra songs late at night to the delight of his neighbors. The cops didn't bust him; the crowds behaved. It was his gift to New York. Blake Eskin tells the story. (12 minutes)