Showing Grave Mercy by Robin LaFevers

Young, beautiful and deadly.

Trained as an assassin by the god of Death, Ismae is sent to the court of Brittany, where she finds herself underprepared - not only for the games of intrigue and treason, but for the impossible choices she must make. For how can she deliver Death's vengeance upon a target who, against her will, has stolen her heart?

A dangerous romance full of intrigue, poison and ultimately finding one's way.