Harry and Jack Williams found fame as the writer of the BBC series The Missing. Now they are in such demand that the first episode of Liar on ITV is shown opposite the first episode of Rellik on the BBC also written by the Williams siblings.
The first episode sees a nice, recently single high school teacher Laura (Joanne Froggatt) being asked out by a widowed surgeon Andrew (Ioan Gruffudd.)
Laura goes on the date in a taxi where the driver recounts how he met his wife, she booked him for a ticket as she was a traffic warden. The next morning Laura has some hazy memories that she might had been sexually assaulted.
Andrew when questioned by the police gives a totally different account of that night's events. It is a question of who to believe.
Laura is tense because of her past mental health history, also her ex is a policeman who had an affair with her sister.
Andrew's wife had committed suicide some years so both parties have a past ripe for exploration but I fear whether there is enough here to stretch out to six episodes and it is in danger of going through soap style histrionics.