The Rapids is an exploration of manic depression (also known as bipolar disorder). With reflections on artists such as Carrie Fisher, Kanye West, Saul Bellow, Paul Thomas Anderson, and Spalding Gray, Sam Twyford-Moore takes readers on a literary and cultural tour of mania and what it means to live with a diagnosis of "bipolarity" in contemporary society. He also looks at the condition in our digital world, where someone’s manic episode can unfold live in real time, watched by millions.

His own story, told unflinchingly, is shocking and sometimes darkly comic. It gives the book an edge that is not always comfortable but full of insight and empathy. Smart, lively, and well-researched, The Rapids manages to be both a wild ride and introspective at once, exploring a condition that touches thousands of people, directly or indirectly.