English phrase from drama scenes

What Does "there's a mole within us" Mean?

Learn what "there's a mole within us" means, when people say it, and how to use it naturally in English.

Intermediate
Neutral
Firm
Warn

There's a mole within us.

It means there is a person secretly betraying the group from the inside.

From Undercovered Heart, Episode 7

When do people say this?

Scene Context

Someone warns the group that a hidden traitor is inside their own side.

Usage Scenario

Use this in serious situations when you suspect someone on your side is leaking information. It sounds dramatic and is not for casual conversation.

Better ways to say it

1
There's a mole in our group.
2
There's a traitor among us.
3
Someone on our side is leaking information.

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