The Photo Detective

I need more information to write an honest description. The source only tells me it's a free public program called "The Photo Detective" in Watertown, but not what actually happens at the event—what the program involves, who leads it, or what participants do. Could you share the underlying event facts? For example: What is the purpose of the program? Does someone teach photography skills, help identify old photos, give a presentation, or something else? Who is it designed for?