When Mark Shillingford calls a race in which his twin sister, Clare, comes in second when she could have won, he believes that she lost on purpose. After confronting her with his suspicions, Clare storms off. Hours later, she jumps to her death from the balcony of a London hotel. Devastated and guilty over her death, Mark goes in search of answers. What had led Clare to take her own life? Or was it not suicide at all?
Nicholas "Foxy" Foxton, a former jockey, is out for a day at the Grand National races when his friend and co-worker Herb Kovak is murdered, execution style, right in front of him --- and 60,000 other potential witnesses. As he struggles to come to terms with Kovak's seemingly inexplicable death, Foxton begins to question everything, from how well he knew his friend to how much he understands his employer.