Black Widow by Kelly Thompson (Black Widow Vol. 8 #1-15)

The entire Eisner Award-winning series in a single book! Something is very wrong with Natasha. She's... happy?! She's reveling in the perfect life she never dreamed she could have. But scratching that surface of that peaceful existence reveals something very wrong lurking beneath it - and a woman like Nat just can't help but scratch. Beyond the Golden Gate Bridge lies a mystery only the Marvel Universe's greatest spy can solve, but doing so will be the most emotional adventure of her long life! As the Black Widow adjusts to a revised status quo in San Francisco, allies old and new will help her target a mysterious emerging threat in the city by the bay - a dangerous villain known only as Apogee. But even more deadly is the Living Blade - the one skeleton in Natasha's closet she hoped she'd never encounter again!

Collecting BLACK WIDOW (2020) #1-15.