The Black Widow is dead...but someone out there is killing her old enemies one by one. With a broken heart and a bloody trail to follow, Clint Barton - the Avenger known as Hawkeye - is looking for answers. And the only person alive who may have them is another of Natasha Romanoff 's ex-boyfriends - Bucky Barnes, the Winter Soldier! Can Clint and Bucky trust each other long enough to honor the Black Widow's legacy, and unravel the web of mysteries that Natasha Romanoff left behind?
