SUPERNATURAL SEASON 5 EPISODE 17 "99 PROBLEMS"

Sam and Dean are cornered by demons, but saved at the last minute by Rob and his townspeople, who are aware of the Apocalypse and have been training to fight and kill demons. The small town is very religious, and the brothers meet Pastor Gideon, who introduces them to his daughter Leah. She has supposedly been receiving visions from angels and guiding the townspeople on their fight against evil forces. When Leah tells the townspeople to kill "evil" citizens in order to be granted salvation in Heaven, the brothers realize that she is actually the Whore of Babylon, a creature from Hell that emerges during the Apocalypse and tries to condemn as many people as possible to eternal punishment in Hell by tricking them into committing Deadly Sins. Unfortunately, she can only be killed by a special stake and by the hands of a true servant of Heaven. So the brothers unite with Castiel and convince Pastor Gideon that his daughter is dead and has been replaced by a demonic creature that has to be killed and that he is a true servant of Heaven. They apprehend the Whore, but the pastor is knocked out. Leah escapes and talks the townspeople into believing that her father is a demon. Dean fights her and manages to stake her with the sacred staff, proving that he is a true servant of Heaven. Sam is quite surprised at this fact and asks him if he is going to do something stupid like letting in Michael. In the end, Dean goes to meet Lisa and tells her that, in the next few days, she's going to see horrifying and unbelievable things on TV, but she needs not worry because he is going to make arrangements to protect her and her son, Ben. He also confesses that if he could, he would live his dream of having a happy family. Lisa is terrified and asks Dean to stay, have a beer and relax for a while, but Dean refuses, although he would very much like to do so.