What would you dare for a free fall of desire and passion?

For four years, Gregory Jackson and his partner, Cambridge police chief Phillip Baker, have enjoyed a committed relationship. Neither suspect there's something missing in their lives. Until one fateful day when Phillip has a close call while on duty...and Gregory's flat tire puts him squarely in the glide path of dangerously charming American pilot Jim Tennant.

While Jim's in town to fly prototypes at the local air force base, Greg struggles to keep their relationship platonic, but Jim is an irresistible force. At the moment a transgression seems inevitable, Phillip surprises Gregory by encouraging him to take exactly what he wants. That night, all three of them really learn what it means to fly.

Gregory's pleasure is tempered by two serious concerns. Why is Jim interested in a relationship with a couple? And why is Phillip suddenly willing—even eager—to invite another man into their bed?