Aristotlean Tree of Knowledge
Spoiler warning!
This article contains plot details about an upcoming episode or an extremely recent episode. Read at your own risk!
... And the Echoes of Memory
Written by Kate Rorick
Season 4
Original airdate February 7, 2018
Episode 12
Previous Episode ... And the Trial of the One

... And the Echoes of Memory is the eleventh episode and season finale of the fourth season of The Librarians, as well as the series finale. It aired on February 7, 2018.


The world is morphed into an unrecognizable place where the The Library never existed; Baird brings the The Librarians together in an attempt to prevent the bleak, new world from becoming the new reality.


Main CastEdit

Guest CastEdit

Community content is available under CC-BY-SA unless otherwise noted.