Author Peter Heller has had a lot of real-life adventures, but he says the biggest adventure of all came when he started imagining Hig, the protagonist of his first novel. “The Dog Stars” is about a man who survives a flu pandemic that killed most of humanity. Before “The Dog Stars,” Heller wrote non-fiction books that document adventurous expeditions. He’s been a long-time contributor to Outside Magazine, Men’s Journal, and National Geographic Adventure. Heller’s latest novel is called “Celine.” Heller talks this hour with Ron Jolly, author and radio host for WTCM NewsTalk 580. Heller starts off talking about his process for writing fiction.