A delightful game.  Great characters, great dialogue.

One common problem with mystery games is that there are usually multiple possible solutions based on the information available to the player, so choosing the "right" solution is largely a matter of guesswork.  I love how this game acknowledges this, but at the same time successfully reaching an end still requires guesswork.  For example, my first assumption upon finding the timer was that it was used to turn the lights off and on again without manual intervention, so there should be no need for Horatio to enter the breaker room at all - but suggesting that Horatio pushed Titanico instead of entering the breaker room leads to failure, because apparently the timer doesn't work that way.  Or for the final choice of the true ending, the reason given for not picking a time before the tour is that everybody saw the knife during the tour - but there are two knives in the game that basically look the same, so there's no reason that the knife used for framing Miss Fortune was the same knife that everybody saw during the tour.

My other complaint is a lack of quality-of-life features.  A common convention in visual novels is that holding <ctrl> skips through previously-seen dialogue, but that doesn't work in this game.  I can work around this by saving at every choice, but the game makes it difficult to tell which saved game slot corresponds to which choice.