Why in the late 1980s and early ’90s did Los Angeles become the bank robbery capital of the world? What is the Magic Third and what does it have to do with racial equity? What do big cats and clusters of teen suicides have in common? These are just some of the questions Malcolm Gladwell addresses in this new work, which revisits the phenomenon of epidemics and examines the ways in which we have learned to tinker with and shape the spread of ideas, viruses, and trends-sometimes with great success, sometimes with disastrous consequences.