Lord Charles Sheridan, Baron of Somersworth
Lady Kathryn Ardleigh Sheridan, Baroness of Somersworth and mistress of Bishop’s Keep
Patrick, apprentice jockey and stable lad at Grange House
Bradford Marsden, close friend of Charles and Kate
Edith Hill, Bradford Marsden’s fiancée
Albert Edward, His Royal Highness, the Prince of Wales
Lillie Langtry (a.k.a. Mr. Jersey), actress, theatrical producer, and racehorse owner
Jeanne-Marie Langtry, Lillie’s daughter
Lord Reginald Hunt, Jockey Club member and racehorse owner
Colonel Harry Hogsworth, racehorse owner
Admiral Owen North, steward of the Jockey Club
Jack Murray, former Scotland Yard detective, now a Jockey Club investigator
Jesse Clark, American trainer
Mr. Angus Duncan, head trainer at Grange House, Newmarket
Mr. James (Pinkie) Duncan, assistant trainer at Grange House and Angus’s nephew
Todhunter Sloan, American jockey
Dr. Septimus Polter, veterinary surgeon
Captain Dick Doyle, Lord Reginald’s racing manager
Henry Manford Radwick, moneylender
Alfred Day (Badger), bookmaker
Eddie Baggs, Alfred Day’s partner
Oliver Moore (Sobersides), Alfred Day’s clerk
Amelia Quibbley, Kate’s maid
Margaret Simpson, Lillie’s maid