The Penthouse Trap (Fifty Floors Above Hate, Book 1) by Nia Laurent

She inherited half the tower. He wants her gone.

Tessa Raye never asked for a stake in Thornhill Tower—or for a front-row seat to its ruthless billionaire power games. Cassian Wolfe is cold, polished, and determined to force her out. Tessa has no intention of making it easy.

As their corporate war turns personal, sharp banter, power plays, and explosive chemistry push them dangerously close to the edge.

In a skyscraper built on secrets and ambition, falling for the man trying to destroy her might be the worst mistake she’s ever made.