double back
verb1
Idiomatic To retrace one's steps; to go back where one has already gone.
- They doubled back in hopes of finding the road again.
- And now she has the real dilemma: press on to King’s Landing, where I have no doubt she could get as close to killing Cersei as anyone else, or double back to Winterfell to reunite with her family.2017 July 23, Brandon Nowalk, “The great game begins with a bang on Game Of Thrones (newbies)”, in The Onion AV Club: