Reunited (Niall Horan AU)

Emily Spectre is no ordinary woman. Her parents died when she was young, and was fostered by a secret organization. As she grew older, her life was filled with killings and reckless missions with her partner, Niall Horan. At a time of crisis, she ended up leaving for good to start a new life, and to find out what was the real reason for her parents' death. She thought she'd escaped, but Niall finds her again to finish one more mission. Through certain challenges, they found themselves falling in love with each other. Will it last through the end?