Train Hideout

The Train Hideout, also known as  "Bertha" was the base of operations for the London Assassin's. The train became Evie and Jacob Frye's base of operations for their work as both Assassins and leaders of the Rook Syndicate.

History
The train was acquired by Rexford Kaylock prior to 1868 and he used it as his base of operations for leading the Blighters in the Whitechapel borough, at some point he garnered the services of Agnes MacBean who kept the train services under his ownership.

Ownership of the train was passed to the Fyre Twins after they killed Kaylock in a street fight.

The Assassins of London turned the train into a mobile Headquarters of the Brotherhood which would prevent their discovery, the Twins also operated directly out of the train using one of its compartments for their private residency.

Agnes remained with the train after the twins obtained it and with the help of Nigel Bumble they improved the train dramatically.

Reference

 * Assassin's Creed Syndicate