SALT LAKE CITY — Fox News has learned from family and investigative sources that bloodstains have been found all over the apartment of Mark and Lori Hacking (search). Police sources say that when they entered the Hacking apartment earlier in the week, it appeared to have been cleaned. But investigators detected a substantial amount of blood using the forensic chemical luminol (search), which can make even well scrubbed bloodstains glow blue-green in the dark, sources say. Police say they believe the blood is Lori’s and that she was attacked in her apartment. Toxicology results that can confirm whether it is...