Spy (2011 TV series)
WordNet
noun
(1) (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
(2) A secret watcher; someone who secretly watches other people
"My spies tell me that you had a good time last night"
verb
(3) Secretly collect sensitive or classified information; engage in espionage
"Spy for the Russians"
(4) Watch, observe, or inquire secretly
(5) Catch sight of