On the Head of a Pin

9.1
/10
Castiel and Uriel ask Dean to torture Alastair for information. But when Alastair breaks free, Castiel starts to believe that there is a traitor among the angels.
S4.E16

Supernatural

On the Head of a Pin

season 4 episode 16

episode aired on march 2009

Episode rating

Season 4
9.4
E1
8.5
E2
9.2
E3
8.0
E4
8.4
E5
9.1
E6
8.4
E7
8.6
E8
8.6
E9
8.8
E10
7.9
E11
7.9
E12
8.6
E13
8.3
E14
8.6
E15
9.1
E16
8.6
E17
9.2
E18
8.1
E19
8.7
E20
8.5
E21
9.3
E22

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