Poltergeist: n. a supernatural being that manifests its presence through physical disturbances THE POLTERGEIST has been an asset of Hydra's for as long as she can remember, forced to kill and carry out their most dangerous missions. Her past is shrouded in mystery, and she knows nothing but her treatment at Hydra's hands. She is a killer with guilt slowly seeping into the shadowy corners of her mind, and she doesn't know how much longer she can continue like this. THE AVENGERS lasted a year split up before Steve Rogers' team, including Bucky Barnes-recently cleared of his trigger words, returned with intentions to make amends and sign the accords. After all, staying together was more important than how they did it. But the events of the fight are not so easily forgotten, and tension brews just below the surface of their team. When a turn of events brings the Poltergeist and the newly reunited Avengers together, Hydra's asset will have to relearn everything in her life and come to terms with her past, all while dealing with the tension amongst the team. Will she bring the Avengers closer together or will her presence fuel the divide between them? But while the Poltergeist deals with the Avengers, Hydra's commander still lives, and he will do anything to get his asset back. A post Civil War AU WARNINGS: Overall dark themes, such as murder, brainwashing, and descriptions of Hydra's treatment of certain characters