Twenty-eight years taught Hank Vargo which fires he can walk into-and which ones will take everything he has. At fifty-two, the Detroit fire captain is grieving, sleeping in ninety-minute increments, and holding Engine 8 together with habit and stubbornness. Then the memo comes: his house is on a closure list. George Zamora is forty, bright as a struck match, and the arson investigator working the string of vacant fires in Hank's district. Three torched buildings in six weeks, all overnight, all with the same signature-or what George thinks is a signature. He's not ready to call it arson. Yet. One arson case and one station-closure vote. That's all the time they get to save the firehouse they both love-and to stop pretending the heat between them is just the job. An open-door, high-steam firehouse romance: grumpy/sunshine, second chances, and a love that always shows up first due.