Collects Excalibur (2019) #16-21. Some things that have been lost cannot be replaced! In the explosive aftermath of the Otherworldly battles of X OF SWORDS, the team is left changed. But who is the woman on the shore? And who is - Queen Elizabeth III?! As the Krakoan Council makes moves to protect the mutants that remain in Otherworld, Excalibur must determine the true fate of Betsy Braddock! Plus: An invisible threat is loose on the island of Krakoa - unseen, unheard, undetectable by anyone - except Excalibur. Can the team hunt it down before the Hellfire Gala kicks off? This all-out mutant event is already shaping up to be somewhat less than pleasant, and Excalibur's actions at the Gala just might change Krakoan diplomacy forever!