Deep in the Cheshire countryside, Philip Thornton has created 'Field Fare' - a hotel with a special reputation for its game dishes. The building contains a secret, known only to Philip. Feeling lonely while her husband, Grant, is away, Teresa dines at 'Field Fare', and Philip entices her to sample a unique cordial. When Teresa confides about her experience to Carrie, her young herdresser, she learns that Carrie has had a similar encounter. Could there be more? Concerned, Teresa approaches her friend, Monica. Aided by Grant, they devise a plan...