I love the mood / style of this submission. The art is gorgeous, the slow melodic music fits the tone well. I had a lot of trouble figuring out how to assemble the clues, as others have mentioned, and did give up on that aspect. Reverting to mouse drag would work well I think, as well as having Shift lock the clue screen instead of having to hold it down.
Mechanically the gun seemed to only work rarely, which made the flame much more effective to have the Morlock back off. It'd be cool if the sound of a gunshot scattered them somewhat in fear. A larger area with less Morlock to deal with would work for more clue gathering, though I'm unsure if the game becomes larger once you figure out the first set of clues. I had the game lock up a few times after trying to enter clue mode, and once when I (believe) I was out of bullets. Not entirely sure why.