You Only Love Twice by Bec McMaster

With the clock ticking down, the Company of Rogues must find a deadly killer and stop them from assassinating the Queen… before London burns.

First rule of espionage: don’t ever fall in love with your target.

Five years ago, Gemma Townsend learned the hard way what happens when you break this rule. She lost everything. Her mentor’s trust. The man she loved. And almost her life. Love is a weakness she can never afford again.

When offered a chance at redemption, the seductive spy is determined to complete her assigned task: to track down a dangerous assassin known as the Chameleon, a mysterious killer sent after the queen, whose identity seems to constantly change.

But as her investigation leads Gemma into a trap, she’s rescued by a shadowy figure she thought was dead—the double agent who once stole her heart.

A man with few memories, all Obsidian knows is Gemma betrayed him, and he wants revenge. But one kiss ignites the unextinguished passion between them, and he can’t bring himself to kill her.

Can Obsidian ever trust her again? Or is history doomed to repeat itself? Because it soon becomes clear the Chameleon might be closer than either of them realized… and this time Gemma is in the line of fire.