Since graduating from Oberlin College, Katharine Wright has taught high school Latin and Greek, but she’s restricted to teaching underclassmen because she’s a woman. Katharine, who doesn’t suffer fools gladly, is proud of Wilbur and Orville and thrilled when a telegram arrives announcing their first flight. Soon afterward, she has words with lazy student Benny Shaw, the handsome, entitled son of a wealthy family who gets by on charisma. Although Katharine has no interest in attending the Shaws’ Christmas party, to which she’s been invited, her best friend, Agnes, whose ambition is to marry well, begs her to come for support. The Wright brothers, who are home for Christmas, have spurned help from the Shaws, preferring to control their own work, but Orville reluctantly agrees to attend the party. Once he’s there, Herman Wheeler, an old schoolmate of the Wrights who seems to hold sway over Mr. Shaw, baits Orville to participate in charades, and he ends up getting mocked. But that’s not the worst, as Orville realizes when he discovers that the drawings and notes for the flying machine have vanished from his jacket, which turns up in the billiard room along with Herman’s bloody body, stabbed with an initialed screwdriver that had also been in Orville’s coat pocket. Orville would be the obvious suspect if it wasn’t for Benny being in the billiard room covered in blood. Believing her student when he says he didn’t kill Herman, Katharine sets out to prove it.