Unsolved Mysteries of the City

From: Mayor
Description: Gentlemen! I feel that the past of the City of Shadows hangs over our souls. To this day, unsolved mysteries keep tormenting our residents! My search led me to a rare piece of evidence, but its trace vanishes in the present. Find it in the past.
Completed: Thank you for your help. You have found a truly rare item, it will take its well-deserved place in the list of City's relics. The City parts with its secrets reluctantly but, piece by piece, we will be able to solve many of its mysteries.