Just when he thought saving the Skidmore kids was the hardest job of his life, JB meets Samantha Cretney, an historian who, unbeknownst to her, has lived thirteen different lives throughout history as a test subject for one of Interchronological Rescue's experiments. Now, her very existence is a threat to the universe. Why must saving the world always require sacrifice?

The Read siblings may have lived in Elwood City their whole lives, but when a body turns up in the woods near their home, the town no longer feels safe. None of them planned to get tangled up in the mystery—but if they don't try to solve the murder, one of them may take the fall.