Schloss Moser (Castle Moser) file

Elena is a young manager who has been entrusted with the restoration and opening to the public of Schloss (Castle) Moser. However, two days before it, she finds out one of her employees planned a theft in the castle. Elena traps 5 suspects inside the castle and she has only one night to discover the traitor.  The game is a visual novel with multiple endings. Which one of the 3 you'll complete first?