sentences:  In the episode, Mulder and Scully believe that a serial killer from the 1940s passed his genetic trait of violence to his grandchild after a detective, BJ Morrow (Deborah Strang) mysteriously uncovers the remains of an FBI agent who disappeared almost fifty years before while investigating a modern-day murder case similar to the older cold case.Although "Aubrey" was written by Charno, Glen Morgan and James Wong, who had written for "The X-Files" before, provided additional contributions to the story.The story for the episode developed around the concept of 50-year-old murders and the transfer of genetic memory.