Files for Divorce from
Michael C. Hall
According to the document, the date of separation is listed as August 9, 2010.
Carpenter cites "irreconcilable differences" in the petition filed in L.A. County Superior Court.
Carpenter is also asking for spousal support and for attorney's fees.
The couple, who married in 2008, have no children.
Julia Stiles -- who guest starred on "Dexter" this season and is rumored to have gotten "close" to Hall -- just issued a statement saying they're just "good friends" and she's not the cause of the breakup.