For this experiment, I build a set using, a sheet of photo frame glass, LED lamp,black textile and a Munny doll to create another Pepper's ghost illusion.
The sheet of class is placed in front of the Munny doll and the light source is spotted at Munny. The back ground covered with the black textile so the ghost can be seen clearly.
When the light hits Munny, it gets reflected on the glass and creates its ghost over the glass.Yuri Endo 2012
Reference: Peppers Ghost Illusion