Leopard The Agent of Darkness. Word Search Puzzle Solver. Leopard The Agent of Darkness word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. In this documentary produced by the BBC Sir David Attenborough leads us through an examination of the lives of two leopards living in Zambia’s Luangwa Valley. This includes identifying and searching for words that are related to : David Attenborough, TV Movie, Documentary .