My Criminal Soulmate

On everyone's eighteenth birthday, they wake up to a tattoo of what the first words their soulmate says to them will be. Leanna wakes up on her eighteenth birthday, only to find the words 'unfortunately, I have to kill you' tattooed on her ankle. After inexplicable events happen, Leanna is left with her soulmate. Except there is one major problem, he may or may not be a killer.