The final programme in a three-part series on the human mind. Investigates the extraordinary way our mind works that allows us to communicate with other people. The presenter discovers how our mind recognises other people and reads their faces and bodies before reading their minds. The programme reveals how to tell whether a smile is genuine, and what happens when people "click" with one another, and how to spot the give-away clues that tell you when someone is lying. It Follows a young woman as she travels halfway across the world to confront her very own social obstacle course. Considers whether she can win over her New Zealand fiancé's friends and family in the week before she marries him.