For my story, I want the police, or F.B.I. probably more accurately, to lure in a serial killer type villain by setting up a sting operation, to get him to go a specific place and do something to incriminate himself, linking him to the past crimes. However, I have been doing a lot of research and cannot find one time, that the F.B.I. caught a serial killer type, using a sting operation. My story is also tricky, because I do not want the police to know who the killer is, until after he shows up for the sting. So they will have to set up the sting in such a way, that they can get him there, without knowing who he is. In the book Red Dragon for example, the FBI tries this by using personal adds. However, I cannot find one real life case where they use a sting to catch one. Does anyone know of any, I could use as inspiration that may help, or anything like that to learn from? Thanks for the input! I really appreciate it.