Lighting a hallway for a night shoot. With no natural light source (IE no windows for moonlight)

Hello There. I have searched this forum and picked up a few hints and tips but feel I need to ask the specific question.

I am shooting a film where part of it takes place in a Dark hallway. Now there is no opportunities to exploit what could pass as natural light (ie, no windows for moonlight e.t.c) but I still need to see the Actors.

How would I go about lighting this? right now Im thinking diffused over everything and fixing in post (the old fix it in post theory). I read a good tip here about not lighting from infront of the camera because it flattens out the image. Any other tips?

Thank you, would really appreciate you help.

Regards

Conan