A girl called Debbie

There's more to Nurse Debbie Holden than meets the eye: she has cared for Dermot Gregory's lonely little boy, restored his sick mother to health and stolen into her employer's heart while she's helped on his farm. Debbie has also impressed professional dancer Michael Thornton with her dancing skills, prompting him to offer her a new career and a proposal of marriage. But what is Debbie's secret? Is it too late for Dermot to discover?