no edit summary
|download= [http://itunes.apple.com/us/tv-season/on-the-head-of-a-pin/id291088594?i=309181287 iTunes], [http://www.amazon.com/gp/product/B001Y4AXS0 Amazon.com]
|outline= Something is killing Angels, and Castiel and Uriel need Dean's help to find out who.
|timeline= Soon after the funeral of [[Pamela Barnes]] who died in [[4.15 Death Takes a Holiday]]
|location= Cheyenne, Wyoming<br />