| Based on the true story of Grace Marks, a housemaid and immigrant from Ireland who was imprisoned in 1843, perhaps wrongly, for the murder of her employer Thomas Kinnear. Grace claims to have no memory of the murder yet the facts are irrefutable. A decade after, Dr. Simon Jordan tries to help Grace recall her past. |
| Name | Character | Episodes |
|---|---|---|
| Zachary Levi | Jeremiah Pontelli | 6 |
| Sarah Gadon | Grace Marks | 6 |
| Anna Paquin | Nancy Montgomery | 6 |
| Paul Gross | Thomas Kinnear | 6 |
| David Cronenberg | Reverend Verrenger | 6 |
| Rebecca Liddiard | Mary Whitney | 6 |
| Edward Holcroft | Dr. Simon Jordan | 6 |
| Kerr Logan | James McDermott | 6 |
| John Tench | Keeper #1 | 4 |
| Samantha Weinstein | Effie | 3 |
| Elizabeth Saunders | Mrs. Honey | 1 |
| Michael Therriault | Mr. McDonald | 1 |
| Dylan Trowbridge | Ship's Doctor | 1 |
| Kate Ross | Agnes | 1 |
| Sarah Manninen | Mrs. Humphrey | 1 |
| Jonathan Koensgen | Keeper #2 | 1 |
| Jonathan Goad | Grace's Father | 1 |
| Martha Burns | Mrs. Parkinson | 1 |
| Jacob Soley | Michael | 1 |