Surendranath | Bannerjee | Sergeant on the IPF, aka Surrender-Not |
Dr. | Bird | Physician who treated Sen's injuries |
Mrs. | Bose | Owner of the brothel |
Marjorie | Braithwaite | Assistant to Dawson |
James | Buchan | A very wealthy jute & rubber merchant, Scottish, friend of MacAuley |
| Byrne | Red-headed Irish textile salesman also lodging at the Belvedere |
Sir Evelyn | Crisp | Managing Director of the Bengal & Burma Banking Corp. |
| Daniels | Taggart's assistant |
Colonel | Dawson | Commander of Section H (secret police) |
Sub-Inspector | Digby | Officer in the Imperial Police Force, reports to Wyndham |
Amarnath | Dutta | Radical host of a revolutionists' meeting the night MacAuley was murdered |
| Evans | Train driver |
| Furlow | Murdered shopkeeper in the East End of London |
Mohandas | Gandhi | Indian politician & activist for Indian independence |
Annie | Grant | MacAuley's secretary |
Reverend | Gunn | Calvinist preacher, friend of MacAuley |
Dr. | Lamb | Pathologist |
Alexander | MacAuley | Murder victim, high-ranking aide ("fixer") to the Lt. Governor |
Superintendent | MacLean | Police officer in Serampore |
Horace | Meek | New lodger at the Belvedere |
Hiren | Pal | Murder victim on the train |
Albert | Perkins | Railway conductor, senior guard |
| Peters | A lawyer in Calcutta for a case, also lodging at the Belvedere |
Dr. | Rao | Physician who tended to Wyndham's gunshot wound |
| Remnant | Captain of a police launch |
| Salman | Rickshaw puller |
Benoy | Sen | Agitator for Indian independence, leader of Jugantor |
Sir Godfrey | Soames | Head of the Landowners' Association |
| Stevens | #2 aide to the Lt. Governor |
Alfred & Albert | Stratford | Toughs under suspicion for Furlow's murder |
Lord Charles | Taggart | Commissioner of the Police Force, a major in the army in WWI Wyndham's boss |
Colonel & Mrs. | Tebbit | Owners of Royal Belvedere Guest House where Wyndham lodges |
Sam | Wyndham | Detective Inspector Captain in the Indian Police Force, newly arrived in Calcutta from England, World War I veteran, narrator |
Albert | | Owner/maitre'd of the Glamorgan Hotel restaurant |
Anjali | | Devi's real name |
Charlie | | Sam's half-brother, killed in WWI in 1917 |
Das | | Fan (punkah) operator at Mrs. Bose's house |
Devi | | Prostitute at the brothel |
Eric | | Coal man on the train |
Isobel | | MacAuley's wife, died of typhus |
Lakshmi | | Prostitute at the brothel |
Meena | | Mrs. Bose's maid |
Parvati | | One of Mrs. Bose's girls who became pregnant & died from a botched abortion |
Ratan | | Doorman at the brothel |
Rosie | | Assistant at Furlow's shop |
Sandesh | | MacAuley's manservant |
Sarah | | School mistress, Wyndham's wife, died in the flu virus of 1918 while Sam was recovering from a war injury |
Saraswati | | Prostitute at the brothel |
Sita | | Prostitute at the brothel |
Vikram | | Digby's snitch |