 Agents Fox Mulder ( David Duchovny ) and Dana Scully ( Gillian Anderson ) head to Aubrey , where the remains are identified as belonging to Agent Sam Chaney , who disappeared in the area with his partner , Tim Ledbetter , in 1942 . The agents find discrepancies in B.J. ' s story , but Tillman comes to her defense . Mulder tells Scully of the case Chaney and Ledbetter were investigating , which involved the rapes and murders of three women with the word " Sister " slashed on their chest . Discovering similar cuts on Chaney 's chest during the autopsy , B.J. instinctively realizes that the cuts spell the word " Brother . " B.J. admits her affair and pregnancy to Scully . 
