The detective in charge of the case tells Mulder that they have found David and Amy 's blood on his shirt .
Scully performs an autopsy on Amy Cassandra , finding a scab on her forehead .
The detective in charge of the case tells Mulder that they have found David and Amy 's blood on Scully 's shirt .
Scully performs an autopsy on Amy Cassandra , finding a scab on her forehead .