This presentation serves as a guide on how law enforcement can conduct successful online investigations. Washington's Missing and Exploited Children Task Force (MECTF) has two detectives and no assigned administrative support. This presentation details how MECTF conducts proactive online investigations to apprehend suspects who exploit children. Topics include team-building, initial set-up, logistics, personnel issues, site selection, UC management, investigative techniques, surveillance activities, arrests, and prosecution results. The presentation includes examples of UC online chats, UC phone conversations arrests, suspect interview videos, pitfalls to avoid, and identifying areas of improvement.