Lady Justice and Good Vs Evil

Walt has a mysterious box hidden in his safe. He has been told it contains a device that can be either a blessing or a curse to mankind depending on who possess it. A Dr. Skinner comes to Kansas City and convinces Walt that he will use the device for altruistic endeavors. But others covet the device for more clandestine purposes. It is the classic confrontation of good vs evil. The question is: which one will possess the device in the end?