'ghosts in the machine' by hollimichelle - Two can keep a secret, if one of them is dead. Peggy learned the truth of that a long, long time ago. She’s been left with a lot of secrets to keep, down the years. Like: Peggy Carter doesn’t age, not like a normal woman. Peggy Carter faked her death, with a little help from Howard Stark. Peggy Carter found out there was a cancer at the heart of SHIELD, and she’s been trying to stop the rot for a long, long time. Steve/Bucky, Steve/Peggy Carter/Bucky, Bucky/Peggy Carter.