at the medical examiner's office, craven takes a lock of emma's hair as a memento, then returns to duty to help find out who wanted to kill him. when he discovers that emma had a .45 pistol in her night stand, he starts to suspect that emma was the target. he checks the gun's ownership and finds out that it belongs to her boyfriend, david. david is living in fear of northmoor, the company where he and emma worked. david will not say more, but craven incidentally discovers that the lock of emma’s hair is radioactive. emma had discovered that northmoor, a research and development facility under contract to the u.s. government and headed by jack bennett, was secretly manufacturing nuclear weapons using foreign material. the weapons were intended to be linked with foreign nations if they were used by the us as dirty bombs.