For a dark, mysterious, foreboding mood, the TV series THE KILLING (which was originally set in Sweden?) and WALLANDER are chockablock with amazing cinematography, set & production design, and art direction.
Of course they both are set in locations (Seattle and Sweden) where the bright sunlight doesn't shine much (although Sweden does have white nights, yeah?) and are subject to misty/rainy weather which are major advantages they have going for them.
My takeaways from these shows are:
1) don't be afraid to put a bunch of "stuff" between your camera's lens and the subject in order to find framing opportunities and ways to shoot "through" it. Errant props, sides of walls, flowers on a table, glass doors, windows, beaded door curtains, lampshades, glass bottles, mobiles, floor plants, you name it.
same goes for
2) if there is a way to motivate this technique, find ways to incorporate reflective surfaces into the scene.
3) don't be afraid to get close! mess around with macros or super macro lenses to isolate particular details in a given location; bug on a window sill, grime on the floor, shoes walking over debris, rain rolling down a pane of glass, etc.