Black Widow by Kelly Thompson Vol. 2

"The Widow has been a spy almost as long as she's been alive. And she's never stopped running, whether she was working for the good guys or the bad. But now something is very wrong with Natasha: she's...happy?! Retirement definitely agrees with the world's deadliest woman, as she revels in the perfect life that she never dreamed she could have. But scratch the surface of that perfect life and you'll find something very wrong lurking beneath it...and a woman like Nat just can't help but scratch. Beyond San Francisco's Golden Gate lies a mystery that only the Marvel Universe's greatest spy can solve!"--