When you suspect infidelity or criminal activity on the part of someone you?re close to, it can be difficult to approach the matter calmly and objectively. Moreover, you may not have the necessary equipment or expertise to come to a reasonable and accurate solution. That?s where Arkus steps in. We realize the emotional distress such a situation can cause, and we approach these matters with the appropriate sensitivity and resolve. Since 1975, Arkus, Inc. has been the premier choice for private detective services in Chicago, bringing personal attention and decades of experience to every case.