When Mark Shillingford commentates on a race in which his twin sister Clare, an accomplished and successful jockey, comes in third, he can't help but be suspicious. As a professional race-caller, he knows she should have won. Did she lose on purpose? Was the race fixed? Why on earth would she do som...

When Mark Shillingford commentates on a race in which his twin sister Clare, an accomplished and successful jockey, comes in third, he can't help but be suspicious. As a professional race-caller, he knows she should have won. Did she lose on purpose? Was the race fixed? Why on earth would she do something so out of character?