Club Excelsior Books in Order

Club Excelsior is a much smaller corner of Sarah Castille's bibliography, but it connects neatly to the fighter side of her work. The series currently centers on Yield to Me, a short, high-heat story that mixes amateur MMA, coaching, and club kink into one focused romance.

At the center of the book is Marcy Foster, an amateur fighter chasing a championship while carrying hurt she has not fully dealt with. Jax enters as the coach and consultant who knows exactly how to push her, in training and everywhere else. That makes the story less about a sprawling external plot and more about trust, control, and what happens when desire hits right at a person's weakest point.

The ring and the club mirror each other.

That is really the core idea of this world. Discipline, submission, dominance, and control are part of the emotional language, not just the sexual setup. Castille uses the fighter backdrop to keep the tension grounded. Marcy is not simply curious or reckless. She is competitive, driven, and used to holding herself together, which makes her attraction to Jax feel both risky and revealing.

Because the series is built around a novella, everything moves fast. There is not a lot of extra worldbuilding or a big cast of recurring side characters. Instead, the focus stays close to the couple, their chemistry, and the emotional wall Marcy has built after broken trust. Jax works because he is not just commanding. He sees what she is hiding and becomes impossible for her to ignore.

The tone is more focused and intimate than Castille's larger series. There is less crime or external suspense and more attention to the emotional link between competition and surrender. If you enjoy romance where a short page count still gives you a full emotional arc, that is where this one lands.

It is short, but it is not slight.

If you want a compact romance that leans into MMA atmosphere, private power dynamics, and characters figuring out how vulnerability can feel more frightening than any physical fight, Club Excelsior is the appeal. Think of it as a concentrated shot of Castille's fighter world, fast, intense, and very much about what people surrender only when they believe the other person can be trusted with it.