Half-sisters Alyssa Denniston, Victoria Hill and Janine Pierson pose for a portrait in Hartford, Connecticut. The three of them say they — and at least 20 others — all share a biological father, Dr. Burton Caldwell.
Mandatory Credit:	Laura Oliverio/CNN

Half-sisters Alyssa Denniston, Victoria Hill and Janine Pierson pose for a portrait in Hartford, Connecticut. The three of them say they — and at least 20 others — all share a biological father, Dr. Burton Caldwell.
Mandatory Credit: Laura Oliverio/CNN

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Victoria Hill never quite understood how she could be so different from her father – in looks and in temperament. The 39-year-old licensed clinical social worker from suburban Connecticut used to joke that perhaps she was the mailman’s child.