How to be human

"One hot summer's night, Mary comes home from a midnight ramble to find her neighbours' baby Flora lying on her back doorstep, desperately vulnerable on the concrete in her little white sleep suit. Has Mary, in her confusion and misery, stolen the baby from next door? Has Michelle, the baby's mother, left her there in her acute state of post-natal depression? Or was she brought to Mary as a gift by the fox who is increasingly coming to dominate h...