An emaciated man, 32, says he was held in his room for 20 years and set it on fire to gain his freedom, according to police. His stepmother was charged with cruelty and kidnapping.

Sullivan was evacuated safely from the home. But a second resident, a 32-year-old man identified as Sullivan's stepson, suffered smoke inhalation and fire exposure. He had to be assisted out of the home, the release said.

Kimberly Sullivan's 32-year-old stepson survived an alleged 20 years of captivity, escaping only after starting a fire. Here's what we know.