Jennifer Montgomery won Wednesday night, adding to her 3-day winnings. She's now up to $45,200.
Montgomery, who considers herself an avid reader, won the final round by naming the book based on a cereal slogan. It was "Breakfast of Champions" by Kurt Vonnegut.
Thursday night, there's a special celebrity edition of Jeopardy! but you can watch Jennifer go for four in a row on Friday at 7:30 p.m. on NBC 7/39.