Marvel. The Black Mamba.

The Black Mamba. That's what everyone calls her. She is responsible for a dozen assassinations in the last 25 years. Hydra made an assassin and took an important thing from her. Her life in the 40s a little time after her brother died in a plane that crashed in the ice. Hydra found her and trained her to be the best assassin they ever had. After some missions, Hydra decided to put her into cryogenic sleep. She woke up in 2009 to a whole different world and ran away from Hydra. Now, she's been working on her own, fighting her own demon's. Can Hayley Rodgers fight to have her life back again?