Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. People (hierarchy name)
4. people (agents)
5. [people by activity]

Anotations

Scope note:

People who watch other people or situations secretly or in stealth, usually such people having this as a career or who are otherwise rewarded for the work. Examples are secret agents employed by a government in order to obtain information relating to military affairs or to collect other intelligence.