This week on Under the Radar:

How is it possible that the bones of a champion racehorse were not too long ago consigned to the dusty attic of the Smithsonian? A horse whose stellar career and long pedigree were little known outside some racing circles? These real-life details intrigued bestselling author Geraldine Brooks. leading her to craft a fictional tale based on the documented history of that top racing horse named Lexington. Brooks’ simply titled novel “Horse” is a tale of the twinned histories of both Lexington and the people who admired her. It is a thrilling narrative stretching across centuries and set against a backdrop of racial turbulence, art history and scientific inquiry.

“Horse” is our July selection for “Bookmarked: The Under the Radar Book Club.”

Support for GBH is provided by:

Geraldine Brooks is the author of six novels including her latest, “Horse.” The bestselling author won the 2006 Pulitzer Prize in fiction for her book, “March.” Brooks, who is Australian-born, is also a former journalist and the author of three nonfiction books, including her memoir, “Foreign Correspondence: A Pen Pal’s Journey from Down Under to All Over.”