Hailey Dunn: Why No Arrests?

Why has there been no arrests in the criminal investigation into the disappearance of Hailey Dunn?There may be several answers to this question.1.  No body. Prosecution of a homicide without a body is difficult, though not impossible.  There is no reason why a rush to prosecution should be done, as a failed prosecution is useless in terms of both justice, and protecting society from murderers. 2.