Winter Knights — Harper Fox

Historian Gavin Lowden is in Northumberland on Christmas Eve for two reasons: to find evidence of a romantic bond between Arthur and Lancelot, and to finally tell his partner Piers that he loves him. Piers has promised to come clean with his conservative family and join Gavin for their first holiday as a couple, but at the last minute, he bails. Devastated, Gavin heads out onto the moors alone, just as snow begins to fall...

Gavin stumbles into an underground chamber, where strange happenings cause him to question what is real and what is fantasy. He's found by two mysterious men who offer him a bed for the night -- and awaken him to nuances of erotic pleasure he didn't know existed. Pleasure he hopes to share with Piers.

When Piers learns that Gavin has gone missing, he is desperate to find him. He knows now breaking up was a terrible mistake, and he's ready to take the next step in their relationship -- if it's not already too late.