Foley was an FBI agent during the episode Manhunt.
Agent Foley was seen behind Mahone, when he had a press conference about the Fox River Eight. She later followed him with Ives when he was talking with Henry Pope. She later also talked with Mahone when he asked about English Street, Fitz Street and Percy Street. She said where it all did lead too. She later talked with Sara Tancredi and asked if she remembered what she had done.