PBS | 8:00 pm

A new episode called "The Leopard Legacy" relates the gripping but surprisingly intimate family saga of a powerful leopardess dubbed Olimba, who rules over a large and very prime realm along the Luangwa River of Zambia. As the episode opens, Olimba has just given birth to two tiny cubs she must protect and train even as she defends her highly coveted kingdom against such would-be usurpers as a nomadic male leopard who seems dangerously focused on her helpless offspring.