Danger Island
Episode 26 (1x26)
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Mu-tan returns to the Skeleton Chief to demand more men. The Chief grants his request, but orders Mu-tan to capture Dr. Hayden and his party or die. As Dr. Hayden and the others travel through the caves to the lost city of Tobanya, Chongo is attacked by a giant bat, which Morgan is able to scare off. However, upon entering another cave, they are not so lucky.