On a crowded train platform in New York City, Kristine Malone heard something that did not belong amid the usual rush of noise. Faint, desperate cries echoed up from below the tracks.
She leaned over the edge, searching through gravel and metal, trying to pinpoint where the sound was coming from. For a moment, she saw nothing at all.
Then she spotted it, a small, fuzzy orange figure tucked close to the wall between the stones…