6 books · Jennifer Rush
Before Anna and Sam, there was Dani and Sam. There's one rule that all Branch operatives must live by: No attachments. When Dani O'Brien entered the Branch, she planned to trade her freedom so that her family could have a better life. But joining up with the mysterious organization is more than she bargained for. Branch head Connor watches over her closely--too closely. The training is brutal, the experiments are secret, and the missions promise to be anything but ordinary.