This was sort of inspired by the wonderful Musketeer story Rest in Peace by Questfan, the last chapter of which is a beautifully crack-y piece of fiction that introduced me to the ship that is (or should be if it doesn't exist) Martha/Porthos.

Potential spoilers for season 1 of the Musketeers and all of New Who.

Notes: In this story Martha never worked for UNIT and she hasn't seen the Doctor since the events in the episode Last of the Time Lords. The Doctor's story continued on much as it did in the show minus Martha.

The Doctor sat leaning back against the TARDIS console, he had his arms and legs crossed and was slowly nodding his head from right to left. If anyone had asked he'd have said he was thinking but there was no one around to ask and truthfully the Doctor was bored. After he'd taken Donna home and given her mother and Wilf strict instructions never to tell her about him or her own adventures, he'd tried to find something, anything, to distract him from the awful truth that it was all his fault and he'd failed Donna. But adventuring just wasn't as interesting without Donna's brassy voice and exasperated looks and he didn't know what to do or where to turn. His eyes suddenly fell on the book he'd left lying open next to him, it was partly to blame for his ennui as he'd picked it up in the hopes of losing himself in Alexandre Dumas' classic tale of the three Musketeers but the handwriting in the front of the book had distracted him. He hadn't realized Martha had left the book on the TARDIS, actually he hadn't realized Martha loved The Three Musketeers so much, but she must've for not only did the book have her name carefully written on the title page, but she'd underlined whole passages of the book and written notes to herself in the margins, she'd even doodled little hearts around Porthos' name several times, which would've had the Doctor grinning on any other day. Today though it was just another reminder of how often he'd failed the people he cared about. He winced as he remembered the last time he'd spoken to Martha. He knew she'd made the right decision for her, and if he was completely truthful, it hadn't hurt him as much at the time as it should've, he'd just kind of gone right on as though it hadn't happened, as though she'd never even been there….

His thoughts trailed off as a smile came to his face, he jumped quickly to his feet and began pulling the levers and turning the knobs that would get the TARDIS to travel where he wanted. It sat down in London and he stopped just a moment to steel himself, after all, he couldn't be sure Martha would really be happy to see him.

It was a cold and rainy autumn day and the wind gusted fitfully as the Doctor shoved his hands in his coat pockets and walked down the sidewalk towards Martha's favorite coffee shop. See, he could remember some things! Of course it didn't hurt that Martha had often requested that they stop in here in the morning, even when they were on the other side of the galaxy. The Doctor had to admit they had awfully good pastries and he was definitely getting one for the road.

'This is me getting out' the Doctor stopped as Martha's voice ghosted through his consciousness.

'This is a bad idea' he thought, turning around quickly.

'But if I don't try…' he turned again then stopped and shook his head, turning he knew he'd made the right choice and….. but what if he hadn't? He turned again. And froze, for there was Martha looking at him with her head tilted and an expression somewhere between questioning and laughing on her face.

"Training for the Ballet Doctor?" she grinned at him as he visibly relaxed.

"Martha Jones! Fancy seeing you around here" he said smiling his most brilliant joyful smile.

"Doctor, what are you up to?" she asked crossing her arms though her smile didn't fade.

"I found this today" he drew her book from his pocket and held it out to her.

"Oh!" Martha's brow furrowed as she took the book and turned it over in her hands.

"Thank you Doctor, I was frantic when I realized I'd left it" she looked up at him as she happily hugged the worn book to her chest.

"I didn't realize you loved that story so much" he told her "if I had I would've taken you to meet the Musketeers".

"You mean you would've taken me to see the men Alexandre Dumas supposedly based his characters on?" Martha asked, quirking her brow.

"No, I mean I would've taken you to meet D'Artagnan, Aramis, Athos, and Porthos. Though I'd probably recommend staying away from the Cardinal, he's really not a nice guy". The Doctor bounced on the balls of his feet.

"So…. they're real? Exactly as they're written in this book?" Martha inquired excitedly, waving the book in the Doctor's general direction.

"Well no" the Doctor pursed his lips "old Dumas took some liberties with their characters, as well as their adventures, and actually the real Musketeers are much nicer people then they seem in that book. In fact I'm friends with their captain; Treville. He's a good man, he went adventuring with one of my earlier faces when he was younger. We had a lot of fun together and sometimes we get together just to talk over everything going on".

"Could… could we, just this once, go traveling again? I'd really love to meet them" Martha asked, the expression on her face torn once again, though this time it was something between ecstatic and nervous.

"Why Martha Jones, that is a wonderful idea" replied the Doctor as though that hadn't been his intention the whole time.

Martha gave him a questioning look but then she shrugged and grinned again as he grabbed her hand and they headed towards the TARDIS.

It's been a while since I wrote fanfic and I've never wrote for these two shows so I apologize if it's a bit wonky. But I was having fun writing it so I thought someone might have fun reading it :)