Nooo, you can't just stop your game right there and leave us with such a big cliffhanger! :(
On a more serious note: I like the game. It's short, interesting and I personally don't mind that it's more like a visual novel where you're wandering around gathering clues. I'm like super hooked on the mystery.
The only complain I have is with a few of your maps: The cliffs at 'Jacobs Point' look extremely weird and the trees don't fit them as well. The 'Treadwell Gardens' on the other hand were either too straight/artifical (for a bunch of natural growing plants) or not artifical enough (for a proper garden that used to be maintained by people). I couldn't quite figure out which one of these options is the one you intended since the sign on the map talkes about wildflowers.
Also at the police station I noticed this one:
This doesn't look right to me.
The other maps were fine in my opinion. I especially love the river on the very first map. So, good job overall. I was really enjoying the story so far.