Protagonist and amnesiac inventor who assumes the dead identity of Arnold Ballin. He escapes murder suspicion, builds a successful gadget company under a false name, and ultimately faces trial before receiving a last-minute reprieve.
John treats Milton as his long-lost son, providing him with wealth and a home.
Loring acts as Milton's legal guide during his transition into the Ballin family.
Smiley provides Milton with survival companionship and aids in his identity theft plan.
Milton becomes the prime suspect in Sally's murder due to his presence at the crime scene.
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