Guest Stars Fiona Dolman as Sarah Barnaby Tamzin Malleson as Dr. Kate Wilding Vincent Regan as Professor Philip Hamilton Andrea Lowe as Ava Gould Rebecca Front as Rev. Martha Hillcott Billy Postlethwaite as Noah Evans William Beck as Michael Dewar Ben Bailey Smith as Zach Lime Roy Hudd as Victor Spencer Gerard Horan as Ewan Evans Paul Copley as Frank Dewar Sarah Lochlan as Nancy Dewar Patricia Brake as Stella Spencer Michael Jayston as Rev. Arthur Gould
