April 10 marks the 20-year anniversary of the brutal murder of Robert Fisher's wife and children in Scottsdale. Fisher has never been found, and to this day, officials disagree over whether he is alive or dead.

In a special re-release, Briana Whitney retraces Fisher's steps and examines the details of this infamous case.

PLUS: Look for a special Case Q&A episode dropping next week taking a deep dive into the case with brand new info and discussion.