Theories abound regarding the identity of Aliza Sherman's killer. Police have never named a suspect, and only one person has ever been charged in connection to her death — but that charge wasn't for murder. In Part 1 of this two-part episode that focuses on the investigation, co-hosts Mike Butz and Sara Shookman revisit the scene of the crime, discuss the evidence available to authorities, detail the challenges the investigation presents and look at what role Aliza's estranged husband might've played.