Jack distracts the officers by pretending to hold Art and Myrtle hostage, giving Ssillissa, the ship's alchemist, time to activate the ship's engines and fly the "Sophronia" to safety. They conceal themselves on Venus, Jack Havock's old home, where Jack tells Art and Myrtle that the colonists there, including his parents and brother, were changed into trees by a sudden pollination. The white spiders take Myrtle to the Martian home of industrialist Sir Waverly Rain, whose factories cover Phobos and Deimos. She escapes with a Martian maid named Ulla and her husband, Richard, with whom she learns that Sir Waverly Rain had been captured by the spiders and replaced with a spider-controlled automaton; believing the spiders might manufacture something much more sinister, they race to London.