A house under construction yet inhabited by a fifteen year old boy, Patrick and his sole guardian Henry, his grandfather, is up in flames. Police and paramedics on site, Calleigh runs in to the burning house to try and save anyone inside, and she collapses and passes out from smoke inhalation. Patrick, home alone at the time, dies in the fire. From the turpentine and burns on Patrick's hands the team assumes he set the house on fire. Throughout the investigation Patrick's ghost appears to Calleigh pleading with her to find out who really set his house on fire. We discover at the end of act 2 that Calleigh is in a coma and everything we've seen of her throughout the investigation has been a dream. Our angry neighbor, Stephanie Hollister, was being driven completely mad by the ongoing construction noise and sleep deprivation. We discover that the incessant noise drove her to electrocute the plumber whom we find dead and plastered behind some dry wall. Calleigh wakes up and provides Horatio with very useful information that she dreamt of that ultimately leads us to our killer. Patrick's grandfather, Henry, set the house on fire to collect money from the insurance company, as he was going bankrupt from the construction costs. Unbeknownst to Henry, Patrick had been skipping school to work on the house. Henry set fire to the house on a school day when he thought Patrick would not be home.