In Marvel Studios' action-packed spy thriller "Black Widow," Natasha Romanoff aka Black Widow confronts the darker parts of her ledger when a dangerous conspiracy with ties to her past arises.

In Black Widow, Weisz will be putting those skills to the test as Melina Vostokoff, a character known in the original Marvel comics as ... Who is in the cast of Black Widow? Johansson, obviously ...