Washington, Sept. 15 -- Taylor Swift made a surprise appearance at the 78th Primetime Emmy Awards on September 14 (local time), delivering a cryptic line in a pre-taped 'Law and Order: SVU' spoof with host Mariska Hargitay that immediately invited speculation from fans.

In the comedy sketch, Hargitay reprised her iconic character Olivia Benson and investigated whether Swift would attend the Emmys, using a classic red-string crime board. Swift eventually appeared in character, wearing a suit and holding her cat Olivia Benson.

According to People, Swift said, "I think what we're looking for is going to be hiding in plain sight: Saccharide. Aries. From the vineyard. North or south," before denying that she had said anything at all.

The un...