We have discovered a Cardassian spy system within the station.

"I've often wondered about your spy system," he said.

"He has a spy system as good as anything in the world," Martinho said.

As nearly as I can figure it out, every dot of land down there has a spy system stealing information from everyone else.

From what the Governor told me, that's nothing more or less than a spy system.

But just in case there was a spy system, she lay back on the cot and closed her eyes.

A better spy system with which to watch his own people, no doubt, but information from here as well, and some equipment.

Their spy system must have been a lot better than I thought.

More and more, its vast spy system is being devoted to the work of tracking us down.

All other spy systems have been extrovert, designed to watch other people.