Sid and Rachel's day together is threatened by Sybil's pregnancy.

The Light Years tells the story of the extended Cazalet family.

Set in the lead up to the outbreak of the Second World War, it appears that the Cazalets have it all.

But we soon discover that infidelity, indiscretions, jealousies and misplaced loyalties lurk just beneath the surface.

Written by Elizabeth Jane Howard

Dramatised by Sarah Daniels

Narrator ...... Penelope Wilton
Sybil ...... Sarah-Jane Holm
Hugh ...... Dominic Mafham
Rachel ...... Naomi Frederick
Sid ...... Helen Schlesinger
The Duchy ...... Shirley Dixon
Dr. Carr ...... Robert Blythe

Producers & Directors: Sally Avens & Marion Nancarrow

First broadcast on BBC Radio 4 in January 2013. Show less