Charlotte’s career is built on theoreticals. As an operating room nurse, she has a protocol for every tragedy — a “then” for every “if.” That all changes one night when, on her way home, Charlotte encounters a teenage girl on the wrong side of a guardrail on an overpass above a highway.

Charlotte wasn’t this girl’s mother, or sister, or best friend. She didn’t even know her. But Charlotte was the last person who spoke to the girl before she died. She was THERE. And now, she doesn't know how to get back to the way her life used to be.

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