From USA Today bestselling author Trisha Wolfe comes the dark and twisted finale of the duet that will leave you breathless. Blakely Vaughn is no longer shrouded from a world of feeling. She’s been thrust into the light, emotions assailing her and making her question her sanity as she hunts the man responsible—the bastard who made her feel. When Dr. Alex Chambers conducted a crude experiment on her in an effort to cure psychopathy, he did more than just remedy her sickness; he changed the very fabric of Blakely’s existence. Having abandoned his project when the cruel woman he fell for convinced him it was a failure, Alex has returned to the city in search of an answer. After numerous failed attempts, his body count is stacking, and he’s attracted the attention of the infamous Angel of Maine serial killer—the monstrous catalyst for his research. Now both Alex and Blakely are in danger of being eliminated by Grayson Sullivan. Once enemies, now drawn together in a toxic tangle of love, hate, and maddening obsession, a twisted malady of the heart will test Alex and Blakely until they’re left with only two choices: save one another…or be each other’s ruin. *An enemies-to-lovers dark romance not for the faint of heart.