Rosemary & Thyme: And No Birds Sing

Horticultural lecturer Rosemary Boxer is hired by a wealthy but ill businessman to help cure a disease causing his trees to lose their bark. She gets to know Laura Thyme, who turns up after a friend is killed in a suspicious car accident, and when the pair find the lord of the manor unconscious beneath his bedroom window, they must decide whether depression led him to attempt suicide or if there is a more sinister explanation. Drama, starring Felicity Kendal, Pam Ferris, David Mallinson and Roger Alborough