This low key shot was taken using a black background and one key light pointing at the subject from their left.
This low key shot was taken using a black background, one key light pointing at the subject from their left and another light pointing towards the subject from behind them, this created the 'halo' effect.
This low key shot was taken using a black background, one key light pointing at the subject from their left and another light pointing away from the subject behind them, therefore illuminating the backdrop creating this lovely glowing lighting.
This low key shot was created using the same 'halo' effect lighting with one key light pointing towards the subject from their left and one pointing towards the subject from behind. The difference between this and the 'halo' effect is here we were using a reflector made out of tinfoil. It was pointed at the subject from their right to highlight the right side of their face with the reflection of the left key light.
Here are a few more images from our low key shoot. I quite like this style of photography and it just shows with the right lighting and know-how you can create a good picture from inexpensive settings.