There are four minutes in a person's life that can undo everything that came before them, and Marcus understood, treading water with his pregnant wife chained beside him, that he was somewhere in the middle of his. "Breathe," he told her, though his own voice shook more than hers. "Elena, look at me. Breathe." The drain was six feet away — an impossible distance and no distance at all. Marcus surfaced, gulped air, and dove, forcing his fingers between the bars of the grate, tearing skin he wouldn't feel until much later, searching blind in water gone black with dusk and dirt and years of the estate's quiet rot. His fingers found nothing. Then, impossibly, something small and hard and cool, wedged against the grate's inner lip where it had caught rather than fallen through completely — the key, saved by nothing more than luck and the tilt of the drain's old, imperfect casting. He surfaced with a gasp that felt like his first breath in minutes, the key clutched in a fist that would not open until he reached her. Above them, the cover had closed to within a foot of meeting the water. The gap of open sky was shrinking to a blade of grey. "Elena — the cuff — give me your hand—" She could barely lift her arm against the chain's pull, her strength spent on staying afloat, on staying conscious, on the baby, on the fear. Marcus caught her wrist beneath the surface, fumbling the small key into the lock with hands that had never felt clumsier or more necessary. The gap of sky above them narrowed to six inches. "Come on," Marcus whispered to the lock, to God, to whatever had let this happen to them. "Come on—"