Prompt/Iron Chef: To build on a scenario Shiva came up with, where Tom is dating a girl who turns out to be Angier's daughter from an affair.
"Mom! Mom!"
"What is it, Tom?" Kay asked, startled as her son stormed into the study.
Tom motioned accusingly out of the room. "Dad just said—he told me—"
"Told you what?"
"Anne!" he sputtered, throwing up his hands.
"That nice young girl you've been dating?" Kay put down her teacup and turned in her seat. "What about her?"
"Dad said—Dad said that's he's her biological father"
Silence fell over the room as Kay's eyes widened slightly. Tom took a deep breath and dropped his arms, which suddenly felt as heavy as lead. "Did you know about this?" he asked quietly.
"No...no, I did not." Kay stared into space for a moment, then gave a soft smile, motioning for Tom to sit down. "But don't worry, Tom. It's not a problem."
"Not a problem?! Mom—I've been dating my own sister!"
"No, that's the thing," Kay said, patting her son on the knee. "Angier isn't your real father!"
Tom blinked, frozen for a long moment as that revelation sunk in.
"Well, that's a 'step' up, at least."