In the early 1990s, Barbara Butcher was hired for the role of death investigator in Manhattan.

She would be the second woman ever to hold the position and the first to do so for more than three months.

Butcher held that role for more than 20 years, during which she investigated more than 55,000 death scenes — 680 of which were homicides.

And she’s written about her experiences in a new tell-all memoir, titled “What the Dead Know: Learning About Life as a New York City Death Investigator,” published by Simon & Schuster.

Butcher joined NY1 political anchor Errol Louis on “Inside City Hall” Friday to share her accounts of investigating everything from accidental deaths to gruesome murders — and identifying victims of the Sept. 11 terror attacks.