Dylan Farrow, now 28 years old, is the adopted daughter of Oscar-winning director Woody Allen. In “An Open Letter From Dylan Farrow,” published in The New York Times, Dylan accuses her father of inappropriately touching her “for as long as I could remember.” She said: “When I was seven years old, Woody Allen took me by the hand and led me into a dim, closet-like attic on the second floor of our house. He told me to lay on my stomach and play with my brother’s electric train set. Then he sexually assaulted me.”

Not good news for Mr. Allen — or for Hillary Rodham Clinton. Here’s why.