Alte variante.
http://onlinedictionary.datasegment.com/word/stakeout
FBI Stakeout Agent 1 was an FBI Agent who along his partner was assigned to stakeout the Pacific Rim Society Restaurant in hopes of finding the North Korean sleeper agent...
http://ncis.wikia.com/wiki/FBI_Stakeout_Agent_1

Sunt două termene folosite în acest sens: tailing (după cum a recomandat colega mai înainte) și shadowing. Ambele înseamnă a urmări în secret. Iată un exemplu:

"Physical surveillance is one of the most common techniques used by investigators to obtain necessary information. Surveillance, or shadowing, involves following a person, both closely enough not to lose them (close tail), and far enough away to avoid detection (loose tail). Effective surveillance requires much practice and a good measure of patience since you may find yourself tailing someone for hours, or even waiting for them just to appear."

Cartea de lui Burt Rapp de mai jos se ocupă cu tehnici de supraveghere, adică ”Shadowing and Surveillance”.