I.

"Everything was so sweet, until you tried to kill me"

•°.
Isabella Rodriguez and Aidan Gallagher have been best friends since they were kids.

Aidan's Mom died when he was born, which caused his dad to be abusive towards him.
One Night Aidan's Dad got completely drunk and beat Aidan up that bad, that he decided to kill him that night.
He ran away, built himself a new life and became the most wanted killer in history.

Isabella found the dead body the next day. She immediately knew that it was Aidan, who killed him, since she couldn't find him anywhere and knew what was going on between them.

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A few years later they Aidan gets the assignment to kill Isabella and from then on everything just got worse...