Theory 2: Rob Endres
Episode three of Unsolved Mysteries does not cast Endres's husband Rob in the best light. Rob paints his relationship with his late wife as being a loving one with occasional issues. Endres's friends and family told a different story, that Rob was possessive and controlling over his wife. Rob's stepson, Pistol, notably had issues with him. Just after his mother went missing, Pistol, then in high school, found himself barred from the house after Rob had changed all the locks.
Rob also confessed to somewhat odd behaviour, granted that everyone grieves differently. He asked for the people who had Endres's remains line her up into a skeleton. As he grieved, he said he had picked up her skull. He also admitted to cuddling with her ashes for a year. But these strange actions besides, Rob presented an airtight alibi. He said that he had been going to work and emphasised that his gas receipt and workplace could prove his innocence — he had just been too far away from her salon. Investigators agreed that his timeline couldn't have matched with that of the killer.
But was his alibi too airtight? Rob revealed early on in the episode that he had a degree in criminology, so perhaps he knew how to work around the police. Endres's friends and family also suggested that she was unhappy and had considered leaving Rob, which could have been a motive for him to kill her. Whether Rob was directly involved in the crime, picked up a murder-for-hire, or had nothing to do with the case, we have no way of knowing for sure.