On Circus Grounds - Deluxe Escape Room Game: Spoiler-free Review

About On Circus Grounds, from BoardGameGeek:

Nicolaas Meester collapses during his opening speech, before the eyes of the public. The director of Circus Meester, a man of iron principles and many enemies, has been murdered. Suspects are questioned, evidence is collected. Someone is arrested and the case seems to have ended. Now, more than 135 years later, you receive a package ... It contains handwritten documents, thumbed photos, mysterious drawings and weathered objects; Remains of the one hundred and forty year old crime scene. With these items and documents you have to find out the true murderer of Nicolaas Meester. In Meester, 1883 players must use their creativity, and powers of deduction to crack codes, solve puzzles, collect objects, and find the truth about the unsolved murdercase.