For her sixteenth birthday, Ashley gets what every teenager her age wants: not a car, but a Companion, a humanoid alien shipped from a faraway planet to be the perfect slave and friend. Unintelligent, docile, and strikingly beautiful, Companions have become the number one must-have thing on Earth and has made the company that owns the Companion-trading business, Dellacourt, extremely wealthy. Ashley's new Companion, Echo, isn't quite right, though--it's just a tad too intelligent to be safe...for the secrets he keeps are the kind that could turn the world on its knees...
Season 4 of The Virus Within
Trinity is familiar with zombies, being one herself, but when strange zombies start appearing, she realizes that the world she knew might be changing yet again.
When a dangerous set of scientific notes are discovered, Trinity and her friends don't realize anything is wrong until a frantic radio call comes in. Unaware of the notes, they race to the south and struggle to determine where the strange zombies came from. The zombies are unlike any ranks previously seen, and they aren't as predictable. Some have new tricks hidden up sleeves, forcing any Stronghold they encounter to quickly adapt to the new challenge or risk being overrun. Secrets never remain hidden, and zombie apocalypses never make life easy.