That's very interesting, James, but I would be willing to bet that what was seen was not a Shadow. Shadows, in my opinion, are not associated with death, or the afterlife. It is unlikely they would be seen around the scene of a possible death, becuase of the destruction of what may have been a food source for them. Shadows tend to only be found near humans when they are useful to them. Otherwise, they mostly ignore us, which a few exeptions. Keep an eye out, tough, because seeing movements in the corner of your eye, and that 'never alone' feeling, can be indicators you may be Shadowprey.
-Shadowling