A decade in the future, humanity thrives in the absence of sickness and disease. We owe our good health to a humble parasite – a genetically engineered tapeworm developed by the pioneering SymboGen Corporation. When implanted, the tapeworm protects us from illness, boosts our immune system – even secretes designer drugs. It’s been successful beyond the scientists’ wildest dreams. Now, years on, almost every human being has a SymboGen tapeworm living within them. But these parasites are getting restless. They want their own lives . . . and will do anything to get them. Sally ‘Sal’ Mitchell owes her life to an Intestinal Bodyguard™, a parasite that has allowed her to recover from a massively traumatic car accident. Without this medical miracle there is no way that Sal would have survived the severe injuries she sustained. Six years after the event and Sally has had to re-learn everything. Her life before the accident is gone, her memories a total blank. I was surprised how much this particular element of the story struck a chord with me. I’ve been in a very similar situation to Sal, minus the tapeworm I’m pleased to say, and I often ponder the person I was...