The best man

"The Best Man" by Grace Livingston Hill is a story about Cyril Gordon, a secret service agent, whose important mission to recover a stolen code crosses into his personal life with unexpected consequences. He has pressing thoughts regarding his relationship with Julia, but his life takes a sharp turn when a series of flukes leads to his reluctant marriage with Cecilia. Cyril is forced to balance his duties as a spy with his growing responsibility to protect Cecilia from the dangers that arise turning him into a man on a mission with the added task of marriage.