U.S. Secret Service agents have come under attack in Upstate author Lynn H. Blackburn’s latest work, “Unknown Threat.”
It’s the first book in the Defend and Protect series, a romantic suspense trilogy by the Simpsonville resident who also penned the Dive Team Investigations series. (The series includes “Beneath the Surface” and “In Too Deep,” a Fall 2018 Okra Pick).
“Unknown Threat,” which was released earlier this month, stars Secret Service Agent Luke Powell, who’s reeling from the death of a fellow agent, friend and mentor. As more agents are targeted, FBI Special Agent Faith Malone is put in charge of the investigation and must work with Luke to solve the case before any other agents are killed.
“There’s a lot of explosions and gunfire and things of that nature, but there’s also a lot of romance too,” Blackburn said of the book.
Blackburn has always nursed a fascination for the Secret Service.
“There’s a lot of explosions and gunfire and things of that nature, but there’s also a lot of romance too.” – Lynn Blackburn, author of “Unknown Threat.”
“I think a lot of people do,” she said. “We see them with the president, following the limousine and the suits and the sunglasses, and it’s an intriguing organization.”
A Clemson University graduate who studied engineering, Blackburn didn’t start writing until 2009, when she decided to sit down and try her hand at a romance novel.

“Inevitably, whenever I tried to write, I’d get two or three chapters in and someone would turn out to be undercover or in danger,” Blackburn said.
A voracious reader of political thrillers and Tom Clancy novels, Blackburn is also a fan of TV crime dramas — her favorites are “NCIS,” “Bones” and “Castle” — shows “where there’s a lot of relationships with all of the characters, and of course you’ve always got a few characters who are falling in and out of love.”
“Unknown Threat” is available at all major book retailers, including Amazon and Barnesandnoble.com. Signed copies can also be purchased at Fiction Addiction in Greenville.