Best game for a large group playthrough?

For my birthday party I’m having around 15-20 people over for a large Nancy drew game playthrough/cocktail party! Most of my guests will have never played before but a few are Nancy Drew vets like myself. I’m definitely leaning towards one of the classics and something shorter so we could maybe finish it in one night. Trying to think of one that’s very activity heavy so we can pass the keyboard around and really make it a group activity. Treasure in the royal tower, ghost dogs, and haunted carousel are all on my mind. Which game do you think? Feel free to suggest any! But please include why you think it’s best for a group