Unexpected Ally

Compose a story where a member of the infiltrated group figures out the agent’s undercover status but decides to help instead of exposing them.

An unexpected alliance can add a unique dynamic to the story, especially when it originates from a supposed adversary. Consider why this member decides to help. What implications does this alliance have on the investigation? It not only brings forth themes of trust, betrayal and surprises but also pushes for character background and interpersonal dynamics.