Supernatural/On the Head of a Pin
From The TV IV
| On the Head of a Pin | |
| Season 4, Episode 16 | |
| Airdate | March 19, 2009 |
| Production Number | |
| Writer(s) | [[]] |
| Director(s) | [[]] |
| Death Takes a Holiday | It's a Terrible Life |
| Supernatural — Season Four | |
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On the Head of a Pin is the sixteenth episode of the fourth season of Supernatural, and the seventy-sixth episode overall.
Starring: Jared Padalecki (Sam Winchester), Jensen Ackles (Dean Winchester)
Guest Starring:
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