FBI special agents Fox Mulder ( David Duchovny ) investigate Dana Scully ( Gillian Anderson ) and after closer examination of the bones , the two find a strange yellow substance covering the underside of the skeletons which was missed in the original examination .
FBI special agents Fox Mulder ( David Duchovny ) is filling in Dana Scully ( Gillian Anderson ) about the discovery of the remains at a well - known site of strange unexplained phenomena . 
 After closer examination of the bones , the two find a strange yellow substance covering the underside of the skeletons which was missed in the original examination .