The situation: Down 7-0, the Vikings faced a 1st and 10 at the Lions' 15 with 8:07 left in the first quarter. They attempted a pass to wide receiver Cordarrelle Patterson.
The reason: They looked to cap an impressive opening drive with a touchdown on a play action pass. The Vikings hoped to catch the Lions off guard with the play and cash in six points.
The result: Lions safety Glover Quin intercepted rookie quarterback Teddy Bridgewater's pass in the end zone and returned it to the 18.
How it happened:

The Vikings motioned tight end Rhett Ellison (circled in yellow) from the left side of the formation into the backfield in an offset "I" formation. Wide receivers Cordarrelle Patterson and Greg Jennings lined up on the right side, with Jennings on the outside. The Lions were in their base 4-3 defense.

As the play developed, Jennings (circled in blue) cutted inside while Patterson (circled in yellow) went outside. Both ran post routes, also known as a "Dino" route. Quin hovered over both receivers but kept his eye Patterson. So did Bridgewater, who stared at him the entire play, right before Patterson broke into his post route. If you look at the pocket, Bridgewater had great protection on this play.

Just as Bridgewater was set to throw the ball, Quin (circled in red) shuffled his feet and baited the rookie quarterback to throw it to Patterson (circled in yellow). Just as he did, Quin hustled over to make a play.

Here's the end zone camera angle to give a better perspective. The ball was still in Bridgewater's hands when Quin (circled in red) jumped the route. Jennings (circled in blue) was covered by a linebacker dropping into zone coverage. Once he got over the linebackers on his route, Jennings was wide open at this point.