chunk: Jack started sneaking away to see Akut and began learning the language of the apes. Jack began to form a plan to take Akut back to the jungle. Paulvitch saw an opportunity for revenge, and agreed to help Jack. They escape to an African port where Paulvitch attacks Jack. Jack (probably now 12), like his father, was man-sized as a teen. Paulvitch is killed, and Jack, terrified, escapes into the jungle with Akut, thinking he will have to run for the rest of his life.
  Like Tarzan before him, Jack learns survival in the jungle and encounters the Mongani apes, who he can speak with because of his dialogue with Akut. The nearest they can manage of his name "Jack" in the ape tounge is "Korak". This means "killer" which seems appropriate since Jack has proven himself to be such.