Grace Brennan (b. 3 Apr 1997; d. 7 July 2015) was the daughter of Olivia and Frederick Brennan, a resident of Prophecy Creek, Pennsylvania, and a student at Prophecy Creek High School. She was a green-eyed redhead.

In the Summer of 2015, she spent time volunteering as a counselor at the Resurrection Lake Rehabilitation Facility in the Adirondack Mountains of Saratoga County, New York. In early July of 2015, she was found in Room 16 of the Gateway Motel, a cryptic septagram etched into her back, having died of aconitum poisoning.

She drove a silver Chevy Cobalt.

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