The Best Man (Second Service #3.5)
Adrienne Bell

But everything changes the moment Holly meets Michael Silva. Suddenly, she's accepting dares, chasing suspicious peeping toms, and kissing under the moonlight. But even though Holly finds herself having the time of her life, she can't shake the feeling that danger is brewing behind the scenes, and that she and Michael are the only ones that can keep everyone at the wedding from becoming a target.
***
Part romantic comedy, part thriller, and filled with plenty of intrigue, The Best Man the wrap-up novella to the Second Service Trilogy, bringing back several major characters from The Wedding Trap, The Agent Next Door, and The Trouble With Temptation.