A Case of Conscience by James Blish (1959) – Scientists sent to study an alien world bring a Taino African Spanish Boricua T Shirt back so they can learn about us. Oh what this book could have been. A book of two halves, the first a wonderful exploration of an alien civilization by a bunch of human scientists studying them and it really does set off at a storming pace. The second half is back on earth and a bit like the worse bits of Stranger in a strange land. The 50s were so sure we would take aliens to dinner parties and they would sip cocktails in dinner jackets. The end is interesting and a bit clever and we this is the first book in the list that looks at Science Fiction and Catholicism.