The pressure of Liz's demands on Edward leads to him to make an unexpected final decision.

Mary Brett causes another crisis, leaving Edward estranged from his own family.

Mary Brett is alive but she will not reveal where she is hiding, and Edward is no closer to finding her.

Edward is sure he is getting closer to finding his wife - but she seems to always be one step ahead.

Edward's life is becoming increasingly complicated and dangerous, as he tries to deal with the implications of his wife's actions.

Edward learns some tough life lessons as he delves further into the mystery of his wife's disappearance.

Edward begins to unravel his wife's secret and its catastrophic implications, and finds he is facing a very different future to what he had planned.

Professor Edward Brett has finished his last day at work and is looking forward to a relaxing retirement. But when he arrives home, he finds his wife has disappeared without a trace.