- "There's something I need to take care of here first."
- ―Peggy Carter
The Brooch Key is a small picklock disguised as a female brooch.
While hiding under the desk of Strategic Scientific Reserve agent Daniel Sousa, Peggy Carter tried to use the Brooch Key to access his file drawer; inside the drawer were photographs that could have placed Carter in La Martinique the night Spider Raymond was killed. However, Carter did not get to use the key because Sousa returned to his desk to answer a ringing phone.