“The Last of Us” Season 2, Episode 5 begins, once again, with the Washington Liberation Front (W.L.F.). Hanrahan (Alanna Ubach) arrives in one of the militia’s W.L.F.-controlled hospitals only to find its basement stairwell completely sealed off. When she asks Sergeant Elise Park (Hettienne Park) why she decided to kill some of her men by doing so, she is told a terrifying story. Sergeant Park tried to fulfill her mission of making the hospital fully operational again for the W.L.F. by clearing every one of its floors. She found little resistance doing so, too, until her soldiers began to scour the building’s three basement levels. B1 was fine. “The whole floor was empty, not even rats,” she says (a line that is sure to make “The Last of Us Part II” players’ ears perk up).

When she sent her son Leon down to help clear out B2, however,...