Go Set a Watchman is a novel by Harper Lee which is slated to be published on July 14, 2015, by HarperCollins in the United States and William Heinemann in the United Kingdom. It was written before Lee's only published novel To Kill a Mockingbird (1960).
Official description:
An historic literary event: the publication of a newly discovered novel, the earliest known work from Harper Lee, the beloved, bestselling author of the Pulitzer Prize-winning classic, To Kill a Mockingbird.
Originally written in the mid-1950s, Go Set a Watchman was the novel Harper Lee first submitted to her publishers before To Kill a Mockingbird. Assumed to have been lost, the manuscript was discovered in late 2014.
Go Set a Watchman features many of the characters from To Kill a Mockingbird some twenty years later. Returning home to Maycomb to visit her father, Jean Louise Finch—Scout—struggles with issues both personal and political, involving Atticus, society, and the small Alabama town that shaped her.
Exploring how the characters from To Kill a Mockingbird are adjusting to the turbulent events transforming mid-1950s America, Go Set a Watchman casts a fascinating new light on Harper Lee's enduring classic. Moving, funny and compelling, it stands as a magnificent novel in its own right.