Louis, poor gentleman, was much to be pitied, for his informers had evidently served him badly, and had led him to expect a greater amount of support from disloyal factions than they had the will or the courage to give him.
"Daniel Defoe"
William Minto
It has a private army for the defense of its property-a complete army of cavalry, infantry and artillery, including a large and highly efficient secret service department, with a host of informers and spies.
"The Book of Life: Vol. I Mind and Body; Vol. II Love and Society"
Upton Sinclair
In the crowd which occupied the old camp, there was a liberal sprinkling of spies and informers-with eyes sharply set to see, and ears to catch, every word that might be tainted with treason.
"The White Gauntlet"
Mayne Reid