I thought something about Mike seemed a little strange...
When processing this photo I noticed his head was translucent!

There was no photoshop trickery involved, this is how it looked out of the camera.
This was an 8 second exposure, but a quick flash at the beginning was enough to light Mike up.
As soon as the flash fired Mike stepped out of the frame for the
remaining 7 seconds of the exposure, which gave him a ghostly look.