BBC Four HD Saturday

Chris Beardshaw travels to both Devon and Cornwall to discover how plants survive in the most exposed areas of Britain

Helen is finally able to get up and about - and see the chaos that awaits her after Tristan's party. James puts in an offer for a family home

James and Helen get ready to move to Rowangarth and experience more of Granville Bennett's hospitality. Christopher Timothy and Lynda Bellingham star

A novelist uses her experiences to write a modern-day adaptation of the ancient myth of Medea, but things don't go as planned. French drama, starring Kayije Kagame

A disenchanted journalist is ordered to write a follow-up piece a year after a mass shooting of five parishioners by a young priest. Drama, starring Luke Arnold

Scarsden decides to stay on in Riversend to dig deeper into the mystery of Byron Swift - and comes across two skeletal remains on Harley Reagan's estate

Tom and Barbara enjoy celebrity status when a journalist writes a story about their way of life. Comedy, starring Felicity Kendal and Richard Briers

A departmental construction project gets under way, but Sir Humphrey is being evasive

Chris Beardshaw travels to both Devon and Cornwall to discover how plants survive in the most exposed areas of Britain

Helen is finally able to get up and about - and see the chaos that awaits her after Tristan's party. James puts in an offer for a family home

James and Helen get ready to move to Rowangarth and experience more of Granville Bennett's hospitality. Christopher Timothy and Lynda Bellingham star