Wolverine - Sabretooth Reborn (2013)

Collects Wolverine (1988) (2010-2012) #310-313.
Sabretooth has returned from seeming death -- but how did he survive his beheading all those years ago? And which Sabretooth is the real one?! As the immortal manipulator Romulus returns from the ebon folds of the Darkforce Dimension, a mysterious red-headed woman comes to Wolverine's rescue...and when her identity and connection to Romulus are revealed, secrets will be revealed that rewrite Wolverine's history once again!