She never meant to notice the way his suit jacket strained across his shoulders during board meetings, or how his voice dropped an octave when he called her into his office after hours. But Marcus St. Claire sees everything. The hitch in her breath when he steps too close. The flush she can't hide when his gaze lingers. The careful way she arranges her blouse each morning, hoping he might undo her careful work himself.

The first time he locks the door, she tells herself to leave. Her hand never reaches the handle. His mouth finds the pulse point beneath her jaw, and his hands learn the shape of her hips over wool and silk, teaching her exactly how powerless she feels when she wants to be powerless. Against the windows overlooking a city that would watch if the glass weren't tinted, over the desk where he signs million-dollar contracts, she discovers the particular cruelty of being made to wait, then the sweet ruin of no longer waiting at all.

Their hours together follow a pattern she craves more each time. The knock. The lock clicking. The slow walk around his desk while he watches, still seated, still in control. The moment his composure cracks and his hands tighten in her hair, her stockings, the curve of her throat. She learns which sounds make him rougher, which pleas make him pause just to hear them again. He learns she tastes like coffee and defiance, that she arches into his palm when he grips her jaw just hard enough, that she has never called anyone sir before and cannot stop saying it now.

What happens behind his closed door belongs only to them. The emails they exchange during meetings, his hand on her knee beneath the conference table when no one can see, the particular smile she saves for elevator rides alone. But secrets compound. A rival notices her new watch, her flushed exits. A board member questions his distracted attention. The promotion she earned before they began touching now hangs between them, tainted by everything they do in darkness.

He has never kept anyone. She has never wanted to be kept. In his private office, stripped of everything but what he gives her permission to keep, she finds something more dangerous than his hands or his mouth or the way he whispers her failures and triumphs back to her like promises. She finds herself asking for morning light. For his bed instead of his desk. For the door to stay unlocked, just once, so she might walk through it and still return.

This is the affair they built from power and silence and need. This is what it costs to want your boss in ways that have nothing to do with salary, and everything to do with the particular loneliness of being seen too clearly and still being chosen.