The first rule of biography, wrote Justin Kaplan: “Shoot the widow.”In her new book, Meryle Secrest, acclaimed biographer (“Knowing, sympathetic and entertainingly droll”—The New York Times), writes about her comic triumphs and misadventures as a biographer in search of her nine celebrated subjects, about how the hunt for a “life” is like working one’s way through a maze, full of fall starts, dead ends, and occasional clear passages leading to the next part of the puzzle.She writes about her first book, a life of Romaine Brooks, and how she was led to Nice and given invaluable letters by her subject’s heir that were slid across the table, one at a time; how she was led to the villa of Brooks’ lover, Gabriele d’Annunzio (poet, playwright, and aviator), a fantastic mausoleum left untouched since the moment of his death seventy years before; to a small English village, where she uncovered a lost Romaine Brooks painting; and finally, to 20, rue Jacob, Paris, where Romaine’s lover, Natalie Barney, had fifty years before entertained Cocteau, Gide, Proust, Colette, and others.