I refer to a group of individuals who have formed a covert organization dedicated to bringing down Michael Lever.

For many years this covert, semi-independent organization has been the most feared bureau in the Romulan government.

He knew there was a covert organization in the works.

The Company, a fictional covert organization in the series Prison Break.

The school was a covert military-training organization, operating as a flying school in Germany.

Her name, the name of a covert subversive organization.

The German had as much as admitted he was part of a covert organisation that could not take any chance of exposure.

The SCP, however, retained a covert organization that was not damaged in the sweep.

Wasn't she in the messy middle of a murder investigation involving covert organizations and state secrets?

The series featured a fictional covert organization working for the United Nations.