Hasta La Motion!

I am working on a film where an actor walks past a pile of dead bodies (see the attached image). The actor in front is footage, so the lighting on the rest of the image needs to match him.

The bodies are all cut out of keyed images and the lighting is very different. I will need to add shadows to as well to make the pile of bodies look real.

Can anyone suggest a method for this. I know I could individually colour correct each person and paint shadows in, but this may not be the best way and I would like to know if anyone has any better suggestions?

Thanks heaps

rstar