He pulls her out of a collapsing inferno at 3:17 a.m. She wakes in his spare room—with an arsonist still out there and a heart she refuses to trust. Firefighter Logan Maddox saves Harper Reyes from a blaze that spread too fast and too smart. With her home reduced to ash and the alarms suspiciously silent, "one night" at his place becomes a fragile truce: temporary walls, permanent chemistry. But the fire follows them. Harper's memory skips, a matchbook surfaces, and an intrusive ex won't stay gone. Rumors swirl at the firehouse, danger tightens around Harper, and every new spark—another prowler, another blaze—proves the culprit is close. Logan lives by rules: protect, contain, control. Harper lives by one: never need anyone. Forced proximity pushes them past those lines, turning guarded glances into scorching nights and fierce loyalty into a vow. As the city watches "the girl in the window," Logan and Harper hunt a truth buried in smoke—and when the next alarm sounds, they'll have one chance to outrun the flames or burn for good.