Host David Ridgen joins victims' family members as they investigate cold cases, tracking down leads, speaking to suspects and searching for answers. S1: Adrien McNaughton. S2: Sheryl Sheppard. S3: Dee & Moore. S4: Greavette. S5: Kerrie Brown. S6: Donald Izzett Jr.
In March 2018, David and his team of volunteers conduct a fourth search of Holmes Lake for Adrien McNaughton. It's the deepest and most thorough search to date and, with the help of cadaver dogs, leads to important discoveries.