S1, E10: Flynn Carsen returns with a plan to finally locate the lost Library and anchor it to Jenkins' Annex. Using objects recovered by the Librarians over the course of their adventures - as if by fate - he opens a portal to the void between space and time. But Flynn's doorway is hijacked by Dulaque and the Serpent Society! Dulaque uses it to travel to one of the centers of magical power, and with one knife-blow he sets history itself unraveling. Only Colonel Baird, now tumbling through alternate versions of history, can set things right. But how can she do this with a Flynn Carsen who was NEVER the Librarian, and her own bloody destiny finally catching up with her?