Why do some of the investigations assignments fail and do not satisfy their client?

Investigation will fail if Private Investigators do not develop contingency plan to offset unforeseeable risks. The investigator must also know the type of evidence that are relevant to Investigate the case and knowing what type of evidence to look for. Observation techniques used and position to take up are also relatively important in
handling of unexpected situation from being confronted by subject/co-subject.

Lastly, distance from target and avoid sudden move or “Face to Face” with the target for more than one time are very crucial. Trial tactics of stakeout, tailing, shadows, on foot and private/public transport.Disguises and appearance change to avoid detection by Subject will allow them to blend into type of surveillance ground.