Killer

Eight years ago, Isla Walsh's summer was consumed by one man-Giovanni Moretti. He was her brother's best friend, the forbidden flame she couldn't resist. They shared a fleeting, intoxicating love, and were destined to burn out too quickly. But when Giovanni vanished without a word, Isla was left alone to pick up the pieces of her heart. She has waited for an answer, forced to reconcile her brother's best friend with the ghost who walked away.

Now at 26 and a successful ER surgeon living in New York, Isla has worked hard to rebuild her life, burying the pain of Giovanni's disappearance. But everything unravels when a dangerous underground fight pulls her into the shadows of her brother's secret world with the Spanish Cartel. Isla soon uncovers that her brother is bound by a ticking contract to the Cartel. And in this world, an expired contract means an expired life.

Desperate to save her brother's life, Isla finds herself face-to-face with the man holding the pen. The ghost is back, but he isn't the boy from the roof. The man stepping into the ring is the lethal enforcer of the Moretti empire, a cold-blooded weapon who doesn't seem to recognize her at all.