Morris, Jonathan

"The year is 1645, and Edinburgh is in the grip of the worst plague in its history. Nobody knows who will be the next to succumb--nobody except the Night Doctor, a masked figure that stalks the streets, seeking out those who will not live to see another day. But death is not the end. The Doctor, Bill and Nardole discover that the living are being haunted by the recently departed--by ghosts that do not know they are dead. And there are other creatures lurking in the shadows, slithering, creeping creatures filled with an insatiable hunger. The Doctor and his friends must face the terrifying secret of the Street of Sorrows--that something which has lain dormant for two hundred million years is due to destroy the entire city... "--Back cover.

Widower Mark receives a mysterious letter giving him hope that he can save his dead wife. The Doctor, Amy, and Rory are up against the Weeping Angels who use history itself as a weapon.

In 2003, Rebecca Whitaker died in a road accident. Her husband Mark is still grieving. He receives a battered envelope, posted eight years ago, containing a set of instructions with a simple message: 'You can save her.' As Mark is given the chance to save Rebecca, it's up to the Doctor, Amy and Rory to save the whole world. Because this time the Weeping Angels are using history itself as a weapon.

Presents an examination of the issues related to the ethics of biotechnology, providing information on healthcare, agriculture, data processing, and more, considering the debates of the moral and ethical implications of each.