Liar is a six-part thriller miniseries created by brothers Harry and Jack Williams, and co-produced by SundanceTV and ITV. The series stars Joanne Froggatt and Ioan Gruffudd, and debuted on ITV on 11 September 2017.
Laura (played be Joanne Froggatt) is a smart and dedicated teacher, not long out of a relationship and unsure about getting back on the dating scene. Andrew (played by Ioan Gruffudd) is a renowned surgeon whose son is a pupil at Laura's school. An initial attraction leads to a date, but neither fully realizes the far-reaching consequences that their meeting will have on each other or their families. Truth and consequences go hand in hand in the tense and gripping thriller that examines both sides of a relationship and both sides of the truth. Are there really two sides to every story?