The Legend of Tarzan - Season 1 Episode 32 -

Zutho, a shady mandrill from Tarzan's past, resurfaces, demanding a favor he claims owed for keeping a 20-year-old secret. Much of this episode takes place in flashback as Terk relates to Jane the events that allowed Zutho (and cohorts Gozan and [???]) to gain such a hold over the lord of the jungle.