Remus woke for the second time this week to the tapping of an owl on his window. While still in need of a few more hours rest, he was so eager for news that he sat up and threw open the window pane, grabbing the parchment from the owl. Tearing it open, he barely recognized the scrawled handwriting. As the words of James' note registered through his still-foggy brain, he leapt to his feet, kicking off his pyjamas and hopping into a pair of corduroy trousers and a jumper. He threw whatever medicinal supply he could grab into his satchel, slung his cloak around his shoulders, and Apparated to the Shack.
He took the stairs to the bedroom two at a time, pausing outside the door to listen, quite aware this could be a trap. Throwing the door open with his wand aloft, he scanned the room, his eyes meeting the form of James huddled on the cot.
He crossed the room in three strides and dropped to his knees, pressing hands to James' face, trembling with exhaustion and fear and overwhelming joy.
"Merlin, please tell me you're alright," he breathed, releasing James' head and rummaging in his bag for potions. Energy restorative, hydration draught, Pepper-Up...he lined the bottles alongside the bed. He found a bottle of water in the bottom of the satchel and tipped it to James' lips.