If you have felt, that for you shadowing we can lead countersupervision is established and establish watching for you. If you have found out shadowing - first of all do not let know, that you have found out them. Otherwise, shadowing can pass to other qualitative level and will struggle with it much more difficultly even to professionals. At once inform bodies of the law and order and-or the private detective. Only professionals can draw final conclusions on presence of shadowing on set of attributes.