A search of the suspected Craigslist killer’s home uncovered 2 pairs of underwear belonging to his victims, the Boston Globe reports. Police could not determine the garments' owners but did identify them as “mementos” of the crimes. Police are also testing the gun found in suspect Philip Markoff's apartment to determine if it was used to kill Julissa Brisman. They discovered the weapon in a hollowed-out copy of the medical textbook Gray’s Anatomy. (More Philip Markoff stories.)