Robert Jarvis dies from a heart attack, leaving his wife Margaret a widow at 42. Family and friends rally round, but she finds herself increasingly suspicious that her marriage had not been as perfect as it seemed. Six months later she revisits the scene of her honeymoon 25 years earlier. There she meets and becomes attracted to Philip Lefarge, but after a night of passion Margaret is filled with guilt and indecision. Philip's self-assurance and commonsense force her to re-examine her life, and try to come to terms with the betrayal by those whom she trusted most.