John Seabrook’s new book is about a family business—not a mom-and-pop store, but a huge operation run by a ruthless patriarch. The patriarch is aging, and he cannot stand to lose his hold on power, nor let his children take over the enterprise. This might sound like the plot of HBO’s drama “Succession,” but the story John tells in “The Spinach King” is about a real family: the Seabrooks, of Seabrook, New Jersey. His grandfather C.F. Seabrook built a frozen-food empire in the farmland of South Jersey, which produced one third of the nation’s frozen vegetables at its height. The P.R. was about a hard-working and innovative farm family, but the business, behind the scenes, advanced with political corruption and violence against organized labor. Then C.F. destroyed his business and his family rather than cede control to his sons. John—a staff writer who has covered many subjects for The New Yorker, most notably music—talks with David Remnick about the consequences of inherited wealth, and overcoming a family legacy of suspicion and emotional abuse.