Mark travels across the USA and to Thailand and back to meet some of the world's most identical twins.
The spectacle of identical twins in matching outfits leading doppelganger lives has always fascinated the public. While some identical twins pursue their own individuality, others actively nurture their sameness, sometimes becoming famous and making fortunes on the back of being so identical.
Mark's journey of discovery takes him to Los Angeles to meet retired Playboy models the Barbie Twins.
Next to Thailand, where he encounters a 'ménage a trio' in which two identical twin sisters have married the same man. Mark broaches the subjects of jealousy and sleeping arrangements.
In Idaho, Mark encounters two sets of identical twins who have married each other, known as a `twin twin' marriage. But not only are they inter-married, they also live together as a family under the same roof.
And finally back to LA, where Mark tracks down the Jamison sisters, a pair of identical twins who claim they have psychic powers and even share the same soul. Despite being in their fifties Linda and Terry dress identically, have exactly the same haircut, and live, work, and chant Tibetan mantras together in their LA home.
But what is the cost of being so closely bonded? And could these twins ever live apart?
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