For the full list of cases in the game, see Cases.

Based on 1900s New York, New Haven is the first district appearing in Mysteries of the Past and features Cases #1-#6.

It focuses on the flocking of immigrants from all over the world, most notably Ireland, to the city of Concordia, where they clash with frustrated native Concordians. It also focuses on a city fire burning down the police's evidence, as well as the possible involvement of Father Donovan in an evil scheme.

The following is a list of all the cases situated in this district.