Surveillance is a covert shadowing to gain information for the furtherance of an investigation. It may be stationary, mobile, technical, electronic and many more. The primary skill required for surveillance is the power of observation, which precedes reporting. Surveillance Investigation is the life-breath of private investigation. Regular surveillance of an individual for some time brings out everything in and around him. It is watching others without being noticed and gathering facts without appearing to care. Surveillance is thus the observation of an individual from a hidden or unknown position to document the extent of a subject’s physical activities. The overall objective of a successful surveillance is accurate observation and credible reporting. Remaining undetected during surveillance often involves physical fatigue and mental stress.