A card based investigation game is an interesting concept.
The graphical style is polished and cohesive. The one suggestion I'd put is that the orange accent color you use doesn't contrast well with the background. This makes the text highlighted in that color unreadable.
As Maui has said, the tutorial portion stretches a bit long. I felt that the first tutorial stage didn't give a good idea of the whole game. The second level made it much clearer. I think you can merge those two levels.
The resource management could use some balancing. Activating cards requires a limited resource. But you lose the card quickly as you move between areas. When the card is lost that resource is also essentially lost which feels bad. I think it'd be better to have the buffs expire as you do actions.
Overall, it's a very polished entry with a lot of room to expand design-wise.