This oceanfront Hawaii home has snorkeling — and writing — vibes, and it’s now on the market for $8.9 million. The modern home was formerly owned by lawyer-turned-bestselling writer Kristin Hannah, author of more than 20 novels including “Firefly Lane,” which became a two-season Netflix series starring Katherine Heigl and Sarah Chalke, chronicling best friends throughout the decades. Hannah has also written historical fiction, like “The Nightingale,” about two sisters in Nazi-occupied France. It was in pre-production with Elle and Dakota Fanning playing the sisters before the pandemic — and may be resurrected. Hannah purchased this contemporary beach house for...