Everyone's always pushing 'The Fifth City' or the Falcon Falls books first, but honestly, jumping into a series right off the bat with Brittainy can feel like diving into the deep end. I'd actually point you toward 'Holding On' instead. It's a standalone, so you get a complete story without the commitment to three or four more books. The plot is tighter, and you still get her signature combo of intense suspense and that slow, emotional romance build. It’s a perfect sampler for her style—you can see if you like how she balances the action with the relationship development. If that one clicks, then you’re primed to tackle the Falcon Falls or Gibraltar series, where the world and character connections get way more expansive. Starting with a standalone just feels less intimidating, and you can still tell if her pacing works for you.
A lot of her readers love the military/security contractor vibe, and 'Holding On' delivers that without needing a wiki page to remember all the team members. It gives you a real taste of the high-stakes scenarios and the protective, alpha-leaning heroes she writes so well. My friend started with one of the later series books and got totally lost in the cameos and references; she had to go back and read them in order anyway. Save yourself the backtracking and let 'Holding On' be your gateway.