The surveillance video, its images disturbingly clear, ends with a woman being burned alive in the elevator of a Brooklyn apartment building on Saturday.
But in the beginning, it seemed routine: a man dressed as an exterminator, wearing gloves, with a protective mask perched atop his head and carrying a container on his back, takes the elevator to the fifth floor.
Sometime later, an older woman carrying groceries took the same ride to the fifth floor. . .