What happens after you click Tweet? The heart-stopping definitive account of the mission to rescue hundreds of Nigerian schoolgirls whose abduction ignited a global social media campaign and a dramatic worldwide intervention. 

In the spring of 2014, millions of Twitter users, including some of the world’s most famous people, unwittingly helped turn a group of 276 schoolgirls abducted by a little-known Islamist sect into a central prize in the global War on Terror by retweeting a call for their release: #BringBackOurGirls. With just four words, their tweets launched an army of would-be liberators. Soldiers and drones, spies, mercenaries, and glory hunters descended into an obscure conflict that few understood, in a remote part of Nigeria that had barely begun to use the internet.