This concept is interesting and for the most part works at the beginning. The way the story is told through the texting seems fairly natural and not forced and the story unfolds in an intriguing way. However, the mystery of what is happening is fairly transparent early on even if the reason is covered up for a little while. But that too becomes fairly obvious so that when the full scope of the event that triggers what is happening in this story is revealed it isn't that amazing. Plus, the wrap up seems completely unrealistic considering how much effort and thought went into to whole event happening in this story that a simple foolish mistake as a single text undoes everything. This may not make sense but I'm trying not to give spoilers. In the end, for a buck it is worth reading to see how this concept is handled.
[3 of 5 Stars!]