The Silent Invasion is the first part of “The Change Trilogy”, set in the near future after the earth has been infected by extra-terrestrial spores that initiate changes in the metabolism of plant and animal life.
Infection leads to both physiological and personality changes, radically altering a victim’s identity and their relationship with others. Attempting to hold back the spread of the change, the infected are taken away from their families and society, by a government Quarantine department, never to be seen again by their families.
When sixteen year old Callie finds that Gracie, her young sister has started to change, she defies her family and community law, and attempts to escape to the Zone, a wild exclusion area in the north of Australia where “the change” has become established.
The story has some similarities to Jack Finney’s 1950s story Invasion of the Body Snatchers (probably better known through film adaptations) in which people on earth are replaced by emotionless duplicates after coming into contact with plant spores (or pods) originating from space. While Finney’s story portrays the unaffected as potential victims trying to escape those dehumanised by the “pods”, Bradley’s book turns things around and those affected by the change become the potential victims, trying to escape from a fearful “unchanged” society.
It was the page-turner I needed to read after tackling a few heavy going (though rewarding books) in the preceding two months. I read it in one day, barely putting it down. Fortunately, before I started I knew it was only the first part of a trilogy so was prepared for a mostly unresolved ending to set the reader up for the next instalment