Dr. 'Steven Maitland was once a boyfriend of Julie Parrish as they worked their way towards school. Eventually she left him wanting to pursue a career. The next that they saw each other, Dr. Maitland was working on the mothership, assisting Visitor scientists develop viruses to use against the resistance and humanity as a whole. However Maitland was with the Resistance and was stalling the whole project until he could destroy the active viruses from the homeworld. Mike Donovan and Julie coming on board to search for a list marking all the Fifth Columnists and resistance leaders, gave him the opportunity to destroy the viruses and escape the mothership.