Lynn Steger Strong’s latest novel, The Float Test (Mariner Books, 2025), tells the story of four siblings coming together one Florida summer to grieve the death of their mother. Each sibling is navigating a cocktail of grievances and secrets that separate them from their loved ones when they need them the most, and they all want to know why their mother had a gun in her underwear drawer. The concerns of The Float Test run much deeper, however.