Retreat reads:
Response : After one of your unique characters is killed, return that character to your hand instead of placing it in your dead pile.
This is an exact reprinting of the version from AFoD. Is the Retreat printed in the Core Set also subject to the errata to the AFoD version found in the AGoT Legacy FAQ 7.0, which says that Retreat...
Should read: "Response: save one of your unique characters from being killed. Then return that character to its owner's hand."