A Halloween maze-goer finds mummified remains of a teenage girl within a pumpkin patch maze. Booth and Brennan are perplexed by the fact that the girl had been dead for at least a year, and Hodgins later finds that her body is covered in spider bits. When a second mummified victim is found in a Halloween park funhouse, the team must question park employees before another teenager falls victim. Meanwhile, the team dresses up for the annual Jeffersonian Halloween Ball.