

When agricultural expert Paul Pitman (Christopher Tranchell) arrives at the grange, Greg feels threatened but the others welcome his expertise. When Greg remembers the supplies in the quarry (Genesis), Tom and Barney are sent to fetch them. Two more survivors arrive, former company director Arthur Russell (Michael Gover) and his secretary Charmian Wentworth (Eileen Helsby) who has stuck with him since 'the death'. Arthur's attitude infuriates Abby. When Tom and Barney fail to return, Greg and Paul set off after them in Arthur's landrover...
A virulent flu bug is spreading through the country like wildfire. Abby Grant (Carolyn Seymour) and her husband David (Peter Bowles) are aware that the flu has reportedly claimed millions of people's lives in China, but they don't think that could happen in England. Abby becomes ill and takes to her bed. Meanwhile Jenny Richards (Lucy Fleming) learns from a doctor that this is no flu bug and that hundreds are now dying. Acting on his advice she flees London for the countryside. Abby wakes days later and fears that she may be the only one left alive...

Abby meets Arthur Wormley who has some strong ideas about how the survivors of 'the death' should organise themselves. Meanwhile Greg Preston (Ian McCulloch) meets a strong willed woman called Anne (Myra Frances) who needs his help to rescue a man who is trapped under a tractor in a nearby quarry. Elsewhere Jenny is still wandering the countryside alone...