By His Rule: A Workplace Enemies to Lovers Romance (Callahan Billionaires Book 2)

Working for a billionaire was supposed to be the answer to all her problems — nobody warned her that the billionaire would become the biggest problem of all.

Scarlett clawed her way out of a struggling hometown with one goal: land a position at Callahan Enterprises and give her brothers the life they deserve. The city delivers everything she imagined — until she meets Kian Callahan. Her new boss is infuriatingly arrogant, ruthlessly demanding, and the kind of devastatingly handsome that makes him even more insufferable. Worse, he's her best friend's brother-in-law, which means escaping him outside the office is nearly impossible.

Kian lives by his rules, and he expects everyone around him to fall in line. Scarlett refuses. Their clashes are legendary, their tension electric — and completely unprofessional.

Then one social obligation threatens to expose the carefully constructed image Kian maintains, and suddenly he needs something unexpected from his most defiant employee: a fake girlfriend. Scarlett knows agreeing is reckless. She knows the line between pretending and feeling is dangerously thin. And she absolutely knows that falling for a man like Kian Callahan — powerful, guarded, and utterly convinced he doesn't need anyone — would be the most foolish thing she's ever done.

But rules have a way of breaking when desire gets involved.

Steamy, sharp, and emotionally charged, *By His Rule* is the second installment in Tracy Lorraine's addictive Callahan Billionaires series — and it's the enemies-to-lovers slow burn you won't