In the fall of 1898, a wealthy former legislator in Battle Creek, Michigan, died quietly in his home.

He was 80. His new wife was 28. And just weeks after their wedding, he was gone.

At first, no one questioned it.
Until a servant came forward with a story—one so strange, so specific, it cracked the case wide open.

But the questions didn’t end with one death.
They spread-- through old family wills, upstairs visitors, and a string of illnesses no one could explain.

And at the center of it all stood a nurse.
Calm. Capable. Smiling.

This is the story of Mary Butterfield Sanderson.
And the house on East Main Street where everything began.