An arsonist has been at work in San Francisco, setting so far two house fires in three weeks. The two sets of residents - both families - all perished, except for one person. Unlike the work of most serial arsonists, these fires were meant to kill their inhabitants. Before she dies, the sole survivor of the those two initial fires tells Hotch and Prentiss of irregularities from that evening before and during the fire: that someone had turned off the water, that the smoke alarms did not work during the fire, that someone had locked the front door in such a way that they could not escape, and that she noticed a fireman inside the house just before she passed out. That fireman they know to be the unsub. Beyond general characteristics, Garcia finds one connection between the two families: the father figures both worked for different companies accused of LUST (leaking underground storage tanks) by an environmental activist/eco-terrorist (depending on one's viewpoint) group called the Earth... Written by
Did You Know?
The Earth Defense Front (EDF) in this episode has a similar name to the real-life group Earth Liberation Front (ELF). The ELF are radical environmentalists who have been involved in arson and other property damage. The FBI considers them to be "eco-terrorists." See more
In S1 Episode 16, "The Tribe," Hotch and his brother Sean have an argument in which they talk about their father dying tragically of a sudden heart attack in his forties, related to stress. In this episode, however, the cause of their dad's death has been changed to lung cancer. See more
Dr. Spencer Reid
This place is great! They have their own espresso machine!
Eh, Dr. Reid? This is detective Castro, she is with the SFPD liaison
Dr. Spencer Reid
Burned my hand on the espresso machine
[picks up a first aid box and unintentionally drops the contents
Det. Leah Castro
A genius you said?
Yeah, eh... his coordination drops off when he is thinking
Written by Enya
, Roma Ryan
and Nicky Ryan
Performed by Enya See more