spy ring
spy network

I told you this little spy network of yours was a wasted effort.

It was a different story now, but a spy network took years to construct.

It is also not known when the spy network first began operating.

"We don't all have a secret spy network on call for such emergencies."

"Has its spy network been able to come up with any leads?"

Why not form a good spy network and see what she is up to?

He had to build a spy network in South America.

American spy networks in some parts of the world are weak.

"Is that why you've got your spy network going full tilt?"

The state's spy networks are also severely limited by cultural factors.