ELEPHANTS AND TIGERS FALL FROM THE SKY AS MULDER AND SCULLY EXPLORE A SERIES OF ZOO ABDUCTIONS.
A rampage by an invisible force leads Mulder and Scully to a zoo where strange abductions may be taking place. In a zoo where no births have taken place in decades, Mulder and Scully seek evidence for alien involvement in human conservation efforts. Their search is obstructed by old rivalries and new betrayals, while humans and animals continue to die. Only a gorilla who can use sign language can interpret events for them -- and her time is running out.