Anna Milton

Anna Milton is a villainess appearing on the TV series Supernatural, portrayed by Julie McNiven.

Season 4
"I Know What You Did Last Summer"

"Heaven and Hell"

"On the Head of a Pin"

In "The Rapture," Anna appears in the backseat of the Impala.

In "When the Levee Breaks," Anna appears to Castiel and demands to know why Castiel let Sam out of Bobby Singer's panic room. Castiel simply replies that Anna shouldn't have come, at which point two angels appear and capture Anna, taking her away to Heaven.

Season 5
In "The Song Remains the Same," Anna travels back through time to the year 1978, intending to kill John and Mary Winchester so they won't be able to conceive Sam. With Castiel's help, Dean and Sam travel back to the same year and manage to thwart Anna's first attempt to kill their parents.

Anna summons Uriel for assistance, and the two angels track down the boys and their parents to their hideout. Uriel restrains Dean while Anna succeeds in killing Sam. Anna then advances on Mary but is stopped by Michael, who is possessing John (who was thrown out the window moments earlier). Michael puts his hands on Anna and burns her to death, then sends Uriel away and, after a conversation with Dean, sends Sam, fully healed, back to the present along with Dean.