There are 3 books in the The Security Experts series. The newest book is High-Stakes Holiday Reunion which came out in 2013.

1
Key Witness

Book cover of Key Witness
When Elle Philips witnesses an armed robbery while standing in line at the bank, she sets into motion a deadly game of cat and mouse. Mark Denton, a security contractor and former navy SEAL, also witnesses the robbery, and is hired by Elle's father to keep his daughter safe following…
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2
Lifeline

Book cover of Lifeline
"I did it for you."

The chilling words in the text message have Julianne Grace fearing for her life. She's sure that her abusive ex-fiancé has killed two people—and that she's the next target. But will anyone believe that her presumed dead ex is really alive? The only man who…

3
High-Stakes Holiday Reunion

Book cover of High-Stakes Holiday Reunion
A CHILD'S LIFE IS AT STAKE 

When Christopher Jordan sees the fear in Ashley Wilson's eyes, he knows he can't let her request for help go unanswered. Despite their tumultuous history, he's the only person his ex-fiancée can trust to find her kidnapped nephew. But how can Christopher trust her…