Twins are known for their unbreakable bond - often communicating with each other in a way others don't understand.
They can finish each other's sentences and swap places with one another - and some even claim to have a 'twins intuition' meaning they can tell what their counterpart is thinking.
But for June and Jennifer Gibbons, the twin bond presented itself in a way that baffled those around them - and ultimately ended in tragedy.
