Riddles of the Dead

S3, E1: Riddles of the Dead

Available on CBS ALL ACCESS, Smithsonian Channel, Prime Video, CBS All Access
A series of mysterious deaths among the critically endangered black rhino population pushes the Ol Pejeta team to undertake a difficult operation: isolate the rest of the herd and move them to a safe area. Failure to act could result in an entire species being wiped out--the stakes couldn't be any higher.