Timeline

Before the Cave-in

1891:

• A flood decimates an entire district in Marcheleau.
• Two teams of surveyors are sent in, only half of one makes it back.
• Zombie virus discovered. In response, the government paves over the entire district.
• Those who were trapped in the district during the flood begin to rebuild underground.

1970's:

• Marcheleau begins building a metro system, taking care not to make contact with already-existing infrastructure for fear of zombie virus.

Late 1970's-Early 1980's:

• Expansion of the metro starts creating connections between metro line and the rest of the abandoned underground. Shopping malls expanded, parking lots built, tunnels dug, and the zombie virus begins appearing in the metro system.

After the Cave-in

1983:

• Marcheleau causes a cave-in that blocks off part of the metro and seals off other exits in hopes of containing the zombie virus.
• Biological tests on zombies begin, both to discover a cure and to use as a weapon of war.

1984:

• The CDC discovers the Marcheleau water table is contaminated. Not everyone becomes infected, but some become carriers.
• Under the guise of measles inoculations, CDC begins identifying carriers of the virus and locking them in the underground for further experimentation.
• Mr. Americana unites the people who were trapped underground and coins them the Mulberrians -- otherwise known as The Dwellers.
• In response to Mr. Americana's exclusivity, Jonas Turner and his cronies form the Key Station Gangsters.
• Elena Chavez opts to leave the Mulberrians and join the Key Station Gangsters.

1985:

• The first disappearances begin. Rumors circulate the undercity of Shadow People abducting victims who crossed the KSG. The KSG make no attempt to refute this.

1988:

• Jonas Turner is disappeared by The Shadow People. Elena Chavez takes his place as leader.

1989:

The people living in the sewer system are finally recognized as a group: The Ratfolk