===[[4.15 Death Takes A Holiday]]===
Alastair is attempting to break one of [[The 66 Seals]] by killing two reapers under a solstice moon. He confronts Dean and Sam in a cemetery, and injures Dean, but Sam is resistant to his powers and fights back. When the boys become non-corporeal, and therefore subject to ghostly weaknesses, they track Alastair down at a funeral home and he traps them with an iron chain. He kills one reaper, but the boys rescue [[Tessa]]. Later as he confronts Dean, Alastair is captured
by the angels, led by Castiel.
===[[4.16 On The Head Of A Pin]]===