When it comes to alien invasions, bad things come in threes.
Three landings: one in England, one in Russia, and one in the United States.
Three long legs, crushing everything in their paths, with three metallic arms, snacking out to embrace--and then discard--their helpless victims.
Three evil beings, called Tripods, which will change life on Earth forever.
Buy When the Tripods Came by John Christopher from Australia's Online Independent Bookstore, BooksDirect.