Kiss by Ted Dekker -- 322 pages
When Shauna wakes from her 6 week long coma, the past several months of her memory are gone, wiped clean without a trace. Supposedly she had drugs in her car and in her house. Supposedly she is in a relationship with someone she can't remember. Supposedly.....but Shauna has to know for sure, and the more she probes, the more she suspects that something much more sinister is going on--and more more dangerous.