The Tarzan twins

"The Tarzan Twins" by Edgar Rice Burroughs is a collection of two novellas originally published in 1927 and 1936. Two schoolboy cousins, nicknamed the Tarzan Twins, visit their famous relative's African estate but become lost in the jungle. Their adventure leads them through capture by cannibals, escape, and ultimately into a dangerous quest to rescue a missionary's daughter from exiled worshippers of Opar's Flaming God. Together with Tarzan and his golden lion, they must stop a group seeking to restore human sacrifice. (This is an automatically generated summary.)