| Lillian | Bowman | Merritt's mother. Lord Westcliff's wife. American Heiress. |
| Sid | Brownlow | Former member of the 1st Dragoons special regiment. |
| Gordan | Catach | Elderly lawyer from Islay. |
| Mrs. | Chalker | Merritt's cook. |
| Ivo | Challon | Youngest son of the Duke of Kingston. |
| Raphael | Challon | The Duke of Kingston's second son. |
| Sebastian | Challon | The Duke of Kingston. Owner of Jenner's. |
| Seraphina | Challon | Merritt's younger sister. |
| Miss | Ewart | Merritt's secretary. |
| Garrett | Gibson | Doctor. |
| Mr. | Gruinard | The supervising exciseman. |
| Horace | Hoagland | Managing steward of Jenner's. |
| Annabelle | Hunt | One of Lillian's closest friends. |
| | Kent | Doctor. |
| Elspeth | MacRae | Keir's mother. |
| Keir | MacRae | Protagonist. Scottish owner of MacRae Distillery. |
| Lachlan | MacRae | Keir's father. |
| Errol | MacTaggart | Sheriff of Islay. |
| Luke | Marsden | 3rd son of an Earl. |
| Marcus | Marsden | Earl. aka Lord Westcliff. Father of Merritt and Luke. |
| | Merritt | Veterinarian who assisted in Merritt's birth. |
| John | Peltie | Working for Lord Ormonde. |
| Cormac | Ransom | Garrett and Ethan's son. |
| Ethan | Ransom | Garrett's husband. Assistant Commissioner of the Metropolitan Police. |
| Eden | Ravenel | Phoebe and West's daughter. |
| Lady Phoebe | Ravenel | Merritt's best friend. The Duke of Kingston's daughter. |
| West | Ravenel | Phoebe's husband. |
| Fia | Slorach | Wife of Ranald. |
| Ranald | Slorach | One of Keir's employees. |
| Joshua | Sterling | Merritt's husband. Deceased. |
| Lady Merritt | Sterling | Protagonist. Sister of Luke. Owner of Sterling Enterprises. |
| Lady Sylvia | Stevenson | Sir George's wife. |
| Sir George | Stevenson | Newly appointed British Ambassador. |
| Daisy | Swift | Merrit's Aunt. |
| Ajax | | Family dog of the Challon's. |
| Cordelia | | aka Lady Ormonde . |
| Culpepper | | Duke of Kingston's valet for 25 years. |
| Duffy | | One of Ethan's agents. |
| Evie | | Merritt's mother. The Duchess of Kingston. |
| Henry | | Phoebe's first husband. Deceased. |
| James | | The Duke of Kingston's footman. |
| Jeffrey | | Merritt's footman. |
| Jenny | | One of Merritt's housemaids. |
| Lord Ormonde | | Cordelia's husband. |
| Lord St. Vincent | | aka Gabriel. The Duke of Kingston's oldest son. |
| Neil | | Keir's friend when he was younger. |
| Owen | | One of Keir's employees. |
| Wallace | | Keir's dog. |
| Wilkinson | | One of Ethan's agents. |
