Sophie and Hannah Hoare are identical twins. From an early age they discover the tricks they can play - particularly when they dress alike and swap names. Add in high intelligence and physical attractiveness and the results are overpowering. They leave their parents, their teachers, their friends in a charmed state, often floundering in their wake. 'Double Exposure' explores their close and almost psychic relationship. The young women each experience a need to develop as individuals. Yet there is an innate pull towards reuniting and helping each other - especially when danger strikes. Both go to university and train to become lawyers.

Sophie however is a high flyer determined to become a leading light in a top city firm. Hannah wants domesticity with a husband and children - items that Sophie regards more as hindrances to progress.