Kyler Tegan Mallory is a friend of Nancy Drew's and invites her to be her maid-of-honor at her wedding.
In 2004, Kyler stayed with the Drew family as a foreign exchange student for a couple of months.
In 2008, Kyler asks Nancy to be her maid-of-honor at her wedding, deciding to hold it at the abandoned Castle Malloy in Ireland. But by the time Nancy arrives, the groom Matt Simmons has disappeared. Kyler is confident that he's simply playing another one of his annoying practical jokes, but nevertheless, she asks Nancy to find him if only to spoil his prank.
- Kyler graduated from Waverly Academy in 1995.
- Kyler's ex-boyfriend, Kit Foley, is her husband Matt's best friend.
- A heart carved in a rock on Dread Isle with "Matt and Kyler forever" inside it indicates that they had their honeymoon there.
- A picture of Kyler can be Nancy's phone background in Shadow at the Water's Edge.