I second this.
If you are in the quick and dirty school of point and shoot and don't want to adjust camera settings, buy yourself a 1,000,000 candle torch (bigass waterproof ones with a rubber seal around the light). Plug it in and point it at the people's feet. Light reflecting off of the floor and especially the lower walls will give you an interrogation room layered light effect and also throw upper shadows to match the extreme downward shadows so you get some nuances of light.
Basically you will be key lighting and front lighting.
And break a leg, sounds like fun!
