The best books of the week

Entrepreneurs in fiction; a way out of Europe’s malaise; Olga Ravn’s subversive witch-hunt novel; literature and life in the letters of John Updike; the costs, benefits and trade-offs of immigration; how Franco remained in power so long; Daniele Del Giudice’s question for writers; a fictionalised account of an unloving mother’s life — plus James Lovegrove’s sci-fi round-up