A Robot monster rises up from the Empire City- Seemingly indestructible- Heartless- Unconquerable! What alien compulsion sends it out to steal? What strange force governs the workings of it's metallic mind, enabling it to seek safety from pursuit beneath the oily waters of the river? THE AVENGER is given the grim task of answering these questions, and of capturing the dark secret behind the smooth facade of- "The Robot Robber"