'Like the Tide' by templemarker - "Esca," he called, "leave it. The weather comes in." He nodded backwards towards the oncoming rain, but Esca merely waved him off and continued the job. Marcus suppressed a sigh; there was little use in arguing with Esca when he put his mind to something, whether it be root-beds or Romans. Marcus/Esca.
'Chosen Man' by sineala - a nicely-written AU in which Marcus finds himself as centurion to a bunch of British auxiliaries, the best posting he can manage given his heritage, only to discover he is unexpectedly drawn to one of their number. Marcus/Esca.
'Mo Tràill, Mo Cridhe' by queenklu - Esca stands now, wraps the driest of their cloaks around Marcus’s shoulders before he can be stopped, ignoring his weak attempts to shrug him off. “You are no longer my slave,” Marcus grumbles, “and you were never my mother.” Marcus/Esca.
'If the Darkness Lasts' by Seascribe - when the dead begin to rise up and walk, Marcus, Cottia, and Esca must leave behind the little farm on the Downs and learn how to build a new life together out of the ruins of the world they once knew. Marcus/Esca, Marcus/Cottia, Marcus/Cottia/Esca.
'Keep Me Where the Light Is' by radiogaga33 - I love amnesia fics, so I was bound to love this, particularly when the characterisation of Marcus is so strong. After hitting his head, Marcus wakes to discovers he doesn't remember anything, not about the place where he finds himself or the man who is there with him and what their relationship is. Marcus/Esca
'Hetaeriae Eaeque Brevi Fient' by sineala - Marcus and Esca are asked to infiltrate a group of men who are believed to be conspiring against the Empire, particularly because of the rumours about the debauched goings-on at the conspirator's dinner parties. Yes, it's 'going undercover as gay' in Roman times. Marcus/Esca
'Anywhere on This Road' by Sineala - This man is glad for Esca's life, Esca realizes, but he has no idea why that should be, why this man should care anything for him. And then the old, familiar lust sparks a little in his eyes, and Esca knows. Oh, he knows. And he hates him for it.. Marcus/Esca.
'Passion & Profession' by demon_rum - an AU demonstrating just how creative fandom can be, though it's not really a crossover as such with one actor playing a role from another fandom altogether (Jane Eyre), and following the career of StJohn Rivers in India. Marcus/Esca (kind of).
'From the Depths of His Heart' by sineala - given that we know, in canon, how Marcus and Esca meet it's hardly surprising that authors in the fandom want to play with that (and with the resultant changes it brings to the character dynamics). In this story, Marcus is still injured in battle and still recuperating from that injury at his uncle's villa but the Esca he meets is a very different one, isolated from his own people because of something that Marcus can barely understand. Marcus/Esca.
'Kith and Kin' by songbird - a really nice alternate look at the whole story, where Marcus is the one who's disappeared into the north many years ago, till Uncle Aquila gets an unexpected chance to know his nephew once more even if Marcus doesn't know himself. Marcus/Esca.
'A Clear View of the Sea' by hesychasm - it's always a pleasure when you find an old favourite writer in a new fandom... this time around, Esca is trying to figure out what it means to be free, but not alone. Marcus/Esca, Marcus/Cottia, Esca/Cottia.