A youngster living in a stately home discovers the magical garden Mary, Colin & Dickon stumbled across years before - but faces a battle with the housekeeper over whether to nurture it.
| Actor | Role |
|---|---|
 Joan PlowrightMartha Sowerby | Martha Sowerby |
 George BakerWill Weatherstaff | Will Weatherstaff |
 Florence HoathGeraldine | Geraldine |
| AAled RobertsRobert | Robert |
 Cherie LunghiLady Mary Craven | Lady Mary Craven |
 Leigh LawsonSir Colin Craven | Sir Colin Craven |
 Gwyneth PowellToby, The Maid | Toby, The Maid |
 Camilla BelleLizzie Buscana | Lizzie Buscana |
 David WarnerDr. Snodgrass | Dr. Snodgrass |
| DDanielle McCormackPenelope | Penelope |