Dr Who - Crack in the wall

The crack in the wall, as seen in the Doctor Who series.

The object is 2 Ll with no physical shape
it is scripted with a slight lighting cast out of the crack. In order to make it work you need to click on the crack and on the light once, then it's ready to go.
There are also 2 more unscripted cracks with no lightning (1 Ll) that you can just attacch to a wall for a minimal result. (I prefer the black one on a bright wall)
All of them are copy and mod except the script, feel free to resize/recolor/include them in your building as you want.