The warm fall day starts like any other at the Center --- a women’s reproductive health services clinic --- its staff offering care to anyone who passes through its doors. Then, in late morning, a desperate and distraught gunman bursts in and opens fire, taking all inside hostage. After rushing to the scene, Hugh McElroy, a police hostage negotiator, sets up a perimeter and begins making a plan to communicate with the gunman. As his phone vibrates with incoming text messages, he glances at it and, to his horror, finds out that his 15-year-old daughter, Wren, is inside the clinic. But Wren is not alone. She will share the next and tensest few hours of her young life with a cast of unforgettable characters.

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