Chase him.

Confident that he can't have gone far, you jog off after him into the gloom. You soon come to realise, however, that there isn't any sign of him anywhere. What is it with these masters of stealth? Why couldn't he have the common decency to leave an obvious trail of blood leading straight to wherever he's hidden himself?

You can:

Look at the painting in the dim, ambient light.

Place the painting against a nearby wall and leave it.

Run like hell in the general direction of your hotel.