Recreating the line detail in shadows from The Wolf Among Us in blender? This is my first year of using blender so I don't have a lot of experience in blender at all. 

I'm trying to recreate an effect that Telltale used in The Wolf Among Us for my short film.

I don't know what its called or how to describe it, so here is my attempt to explain it, You can see the detail from the painted textures in dark shadows. I added a picture so you can understand my horrible explanation.  



I tried a few experiments with texture nodes and even mixing nodes in composting but I can't get the effect I want and I'm hoping someone will tell me if this is even possible or direct me into the right nodes and usage of them.

This is just a basic scene I created to figure out how it works. In the next image you can see exactly what I want to do, keep in mind this is created in Photoshop by combining two renders just for explanation purposes.

 

Unfortunately I can't add anymore photos and I'm not sure how to link my .blend file so I hope this is enough info to show what I want to do.

Thanks.
This won't take care of all the effects you're looking for, but you'd be able to get some of the pattern to show up in darkness by the material shadeless.  That won't create the effect you point out in the shadows on the floor, but it would work for the pattern on the wall.