Gashlycrumb

From the introduction:

Time is of the utmost importance, as two of the 26 orphaned children have already been found missing. The local authorities have no idea where have gone; it is assumed that they have run away, as “those types” of children are wont to do. The children fearfully blame the Umbrellaman. The headmaster is at her wits end. It is at the behest of an anonymous letter, written in a child’s scrawl, that you have been requested to come; as whoever wrote the letter has seemingly followed your cases in the papers.

User summary:

During development, this intriguing game was titled Voices and Gashlycrumb.