The exciting new novel from the author of the Orange Prize-winning "Bel Canto". Among the tangled waterways and giant anacondas of the Brazilian Rio Negro, an enigmatic scientist is developing a drug that could alter the lives of women for ever, but her work is shrouded in mystery and she refuses to report on her progress. Marina Singh, once the student and colleague of Dr Swenson is despatched to uncover the secrets being held in the darkest depths of the rainforests. 'A triumph and Pratchett's best book yet' "Guardian"