Sanctuary

Season 4, Episode 1

Episode Title: Tempus

Air Date: 2011-10-07

Overview:

Magnus has pursued Adam Worth back to 1898 London to stop him from altering and quite possibly completely destroying the future. As she battles to stop Worth, stay hidden from her past-self, and avoid taking any action that might change the events of history, Magnus must also figure out how to get back to her own present day timeline.