While the team was investigating Linda McChubs's murder, they discovered that the abandoned McChubs Shoes factory wasn't owned by the McChubs family but by an estate agent who hired it to them. His name was Zack Clewn and he instantly became a suspect in the investigation. He said that he still owned the factory but Linda wasn't paying the rent anymore.
Later that day, Zack was arrested for having murdered Linda and he confessed. He killed her by dropping paladium in the factory air duct with her locked up inside. His motives were that she wasn't paying the rent for the factory but wanted to keep using it, so Zack was actually losing money. He was sentenced to 40 years in jail with parole in 30.