Created and written by BAFTA and Golden Globe nominated producers and screenwriters Harry and Jack Williams, "Liar" tells the story of a night that changes the lives of Laura Nielson (Joanne Froggatt) and Andrew Earlham (Ioan Gruffudd) forever.

Laura is a smart and dedicated teacher, not long out of a relationship and unsure about getting back on the dating scene. Andrew is a renowned surgeon whose son is a student 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 a 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?

"Liar" explores the devastating cost of deceit on both the couple and their friends and family, as secrets and lies are laid bare...