The Lions took a 14-0 lead by early in the second quarter, following a 9-yard touchdown reception by Golden Tate and a 41-yard interception return by Rashean Mathis.  But that would end Detroit's scoring for the day.  Buffalo came back on field goals of 45 and 25 yards by Dan Carpenter, making the score 14-6 by the start of the fourth quarter. Kyle Orton hit Chris Gragg with a 2-yard TD pass, and the ensuing two-point conversion knotted the score at 14-14. With 26 seconds left in the game, Alex Henery missed a 50-yard field goal attempt, his third miss of the day. The Bills quickly moved the ball to the Lions' 40-yard line, setting up Carpenter's game-winning 58-yard field goal with 4 seconds remaining.
Question: How many points did the Bills trail at the start of the fourth?
Answer: 8