The compelling story of one of the most successful mountain gorillas that has ever lived - a huge silverback called Titus. The programme starts in 1967, when the researcher Dian Fossey first made contact with a group of mountain gorillas in Rwanda. She opened up a window on to their secret lives. Forty years on, this film reveals the complete and dramatic life story of one individual animal. Titus's father was murdered by poachers in front of his very eyes. His mother abandoned him in the subseq...