Parasite / Mira Grant / 504 pages / Oct. - Nov. Challenge Scary

Sally Mitchell existed in a state of living death after the accident.  Symbogen came to her rescue. The corporation headed by Dr. Stephen Banks had developed an implantable tape worm that established equilibrium in the host body working far better than currently marketed antibiotics.  Sally would have died without the implant.  She has lost all memory of herself before the accident and returns to Symbogen periodically for check ups and reboots.  Unfortunately, implant recipients are starting to manifest symptoms of the sleeping sickness - basically fugue states that result in violence.  Will Sally be one of the victims?  This is the first book in a new series.  Watch out for the plot twist toward the end...