A Promise of Hell

She could bide her time. But Rowan couldn't tolerate this. He could ignore his big brother, but Sienna flaunting herself above his beloved Lorelei? Unforgivable.

The more he thought about it, the angrier he got. "Showing off, huh? Careful. Don't get too cocky."

Sienna wasn't angry at all. She actually laughed, shrugging casually. "Starting a company at nineteen with a billion-dollar market cap. Sh