Inhalt: The harrowing story of five men who were sent into a dark, airless, miles-long tunnel, hundreds of feet below the ocean, to do a nearly impossible job--with deadly results In the 1990s, Boston built a sophisticated waste treatment plant on Deer Island that was poised to show the country how to rebound from environmental ruin. The state had been dumping barely treated sewage into the water for so long that Boston had America's filthiest harbor, with a layer of "black mayonnaise" coating the seafloor. Fisheries collapsed, wildlife fled, and locals referred to floating tampon applicators as "beach whistles." But before the dumping could stop, a team of divers had to make a perilous journey to the end of a 10-mile tunnel--devoid of light and air--to complete the construction. Five went in, but not all of them came out. Drawing on hundreds of interviews and thousands of documents, award-winning writer Neil Swidey takes us deep into the lives of the divers,...