Mark Vincent, spy with the Washington Bureau of Intelligence and Security, has become the lover of Quinton Mann, spook with the CIA. With what's going on in both their organizations, can two such diverse men maintain any kind of relationship? Mark Vincent and Quinton Mann have finally kind of, sort of, exchanged promises. Mark has returned from an assignment on the West Coast, and he’s looking forward to spending some quality time with his lover. After all, it’s the St. Patrick’s Day weekend. What could be better than a little beer, a little corned beef on rye, and Quinn in his bed? However, on Monday it’s back to the grind—this time to an almost empty department: Matheson is away on assignment and Ms. Parker, Mark’s secretary, is taking sick time, something she never does. But these aren’t the only signs of something unusual, well, more unusual than normal, going on. Gradually, Mark uncovers a series of events going back to the previous spring and involving not only his senior special agent but Theo Bascopolis, a former rent boy who is Mark’s friend. While Mark unravels the threads of the Gordian knot the WBIS has become, he realizes how deep his feelings for Quinn have grown. But can a spy like Mark ever hope to be “the one” for a spook like Quinn?

Quinton Mann and Mark Vincent are settling into a relationship that shouldn’t be possible. After all, Quinn is CIA, while Mark belongs to the WBIS, an agency labeled by others in the intelligence community as being staffed by sociopaths. Somehow, in spite of that, they seem to be making it work. Surprisingly, it isn’t work that separates them but family matters and a friend’s plea for help when his partner is kidnapped. Quinn is off to London, while Mark heads for Los Angeles to solve the kidnapping. Then Mark gets called to Paris by Femme of the Division, where things are not as they seem. Quinn, thinking to meet Mark in Paris, ends up coming to Mark's rescue. Back in the States, Mark fights taking time to recover from being shot while events are happening at the CIA that could endanger both Quinn and his best friend, DB. Between family, friends, and Mark, how will Quinn make the opportunity to talk to Mark about moving in together and even starting a family?

Quinton Mann and Mark Vincent - still as dangerous, intelligent, and perceptive as they were when they started playing mind games with each other, and still in love. With Quinn having inherited the Mann family estate in a state of serious disrepair, he and Mark with the help of their family and friends decided to fix it up and then live there, together. But when a mystery from the Mann family past intersected with the death that led to Quinn inheriting the estate, Mark and Quinn were determined to solve it, and see Quinn's cousin DB and his ladies safely married. But there are always eyes watching two such dangerous men. Would they be able to continue their relationship without nosy, judgmental people trying to put an end to it?

The Continuing Adventures of Mark Vincent and Quinton Mann Can things possibly run smoothly when a CIA spook moves in with a WBIS spy? If they’re Quinton Mann and Mark Vincent, they damned well better had. Quinn, having resigned from the CIA after the debacle of a covert agent being outed, is now living with Mark. Over the next year and a half, they learn to navigate the seas of their relationship together, dealing with a death in the family and Quinn’s new career as a writer, while friends from Mark’s previous life reach out for help and the CIA tries to get Quinn back.

In 2002, Mark Vincent, onetime senior special agent, ran into John, a troubled little boy, at a local McDonald’s. Concerned, although it wasn’t his business, he gave the kid his business card and left. Three years later, Mark is director of his department at the WBIS and married to Quinton Mann, the former CIA spook who now writes spy novels. They’ve settled into a life of quiet domesticity and are even considering adopting a cat. All this changes when John, now using another name, barrels into Mark’s life with a secret no one expects and on the run from an organization that wants him despite the collateral damage. What will Mark, the man known as “the best” in the intelligence community, do when he learns what this secret is? Will it affect his relationship with Quinn? And how complicated are things going to get when they decide to get involved?