DISCLAIMER: I do not own Harry Potter, Doctor Who or the Chronicles of Narnia. I own this plot only, and any OCs. My depictions of real life characters are based on stereotypes or suppositions and no insult is intended. I have no desire to own the series this story is based on, although if anyone could give me either a wand, TARDIS or wardrobe portal into Narnia I certainly wouldn't say no.

IMPORTANT: This is a rewrite of my story, You Are Not Alone and, as such, any resemblence to that story is intentional.

Author's Note: Thank you so much for the response to the prologue, which was a lot more than I expected in the first 24 hours.

UPDATE (21/10/2012): Chapter extended, stylistic changes.

Harry Potter and...
The Heart of the Lion
A Harry Potter/Chronicles of Narnia/Doctor Who fanfic by doctor-b1993

Part One: Inito Nova Ingressus

Chapter One: Hendon House

'I'm a king. I've fought wars. I've led armies!'...'Not in this world.' Edmund & Lucy, The Chronicles of Narnia: The Voyage of the Dawn Treader (FOX/Walden Media)

Location: The Doctor's TARDIS
Time: Unspecified

'Look at him! He's smitten isn't he?' Donna whispered as she and the Doctor watched the Doctor's nine year old charge look anxiously back at the scanner every few seconds as it continued to count down the time until the TARDIS would land in wartime London.

'Probably. Not that he would understand it yet. I think Lucy is too, wonderful girl. It's just whether or not they realise how right for each other they could be.' The Doctor said somewhat non-committally, not wanting to tell his companion what he saw in the twisting timelines before him.

Location: Strand tube station, Westminster, London, England, Earth
Time: September 1941 CE

Nine year old Harry Potter had stepped out of the TARDIS near Charing Cross, waving goodbye to the Doctor and his companion Donna, quickly making his way to Strand tube station where he could take a Northern line train to Hendon Central station near his new boarding school, Hendon House. As he descended the stairs down to the platforms, he really hoped that Lucy would be at the station. He smiled as he thought about the youngest Pevensie, and he often thought that the very reason the Doctor had enrolled him in primary school in 1936 was just so that he would meet the young Lucy.

He had quickly become friends with the sweet and effervescent auburn haired girl when they met as four year olds at primary school in Finchley, and after she had been evacuated to Oxfordshire during 1940, they had tried to keep in touch, with the Doctor setting up a home near Oxford as part of Harry's cover for his evacuation from London. Lucy had of course told Harry of her adventures into Narnia, just as Harry had told Lucy of his adventures with the Doctor, and Harry believed her, how could he not with all the things he had seen with the Doctor.

Now, they were both nine years old and off to their first year of boarding school, Lucy would be attending St. Finbar's Girls School which was just across the street from the school he was attending. He reached the platform at the base of the stairs just in time to see the Pevensies looking around confusedly before sitting back down on the bench they were in front of. He looked at the clock and saw that the train was still not due for another 10 minutes, so he walked closer to the group and, noticing none of them were paying attention to him, he said 'Hey Lu!'

Harry winced slightly as Lucy squealed before running to hug her best friend, and he just had enough time to place his suitcase down before Lucy's arms wrapped around his neck in one of trademark hugs, the ones that were reserved on Earth for her siblings and Harry, and in Narnia for Tumnus and Caspian. Harry stood up slightly straighter, lifting Lucy marginally off the ground, swinging her slightly, causing her to giggle before setting her down. 'Harry! How was your holidays?' Lucy asked as she pulled away, pointedly ignoring the kissy faces being pulled by her three elder siblings...so much for mature, she thought.

'It was good, we went to 1926, and a 51st century Library planet. What about you?' Harry explained in hushed tones.

'The holidays were soooo boring!' Lucy moaned, but then brightened considerably when she continued, 'But then just before you got here we got pulled back into Narnia, right off the platform! 1300 years had passed since we had left, but Aslan had pulled us back to help put the rightful king on the throne...'

Lucy continued to tell Harry everything about her second trip to Narnia even as the train pulled into the station and they followed Lucy's elder brothers and sister onto the train, awkwardly trying to fit all their luggage on the train.

Location: West Hendon Broadway, Hendon, London, England, Earth
Time: October 1941 CE

Just over a month into their first term at boarding school, Harry and Lucy had the opportunity to head into Hendon once again, as they had each of the first three weekends of term. West Hendon Broadway, as with every other weekend, was currently overflowing with students from the two local public schools all wandering around, enjoying the opportunity to get away from school and to mingle with their friends both from their own school and those from the school across the road.

'So, what do you want to do now?' Harry asked as they left the secondhand bookshop on Broadway.

'Let's go to the park!' Lucy said with a smile. 'Just go for a stroll through Hendon Park.'

'Then the park it is!' Harry said, offering his hand to his friend and they set off, having to cross two railway lines along the way. They arrived at the park which was currently occupied by several couples from the two schools taking the opportunity for some quality time together. The pair followed the main path through the park, enjoying the sights of the duckpond and the oak trees lining the path. They passed a park bench along the way and they recognised the couple in that seat in a passionate embrace as Susan and her latest beau, Stephen. Harry and Lucy looked at each other and ran off, barely containing their sniggering until they were out of earshot. As they reached the end of the path through the park, Harry glanced at his watch and paled slightly. 'Uh, Lu? We've only got 10 minutes before we have to be back!'

'We'd better hurry then!' Lucy answered after she too had paled, as they clasped hands and started running back in the direction of Hendon House and Saint Finbar's in the northern part of the suburb of Hendon.

The pair made it back with just barely two minutes to spare, and Lucy pulled Harry into a quick hug before she jogged across the road to have her name marked off by one of Saint Finbar's staff members while Harry walked back through the main gate of Hendon House.

Location: Hendon House, Hendon, London, England, Earth
Time: July 1942 CE

Harry shook his head to clear the cobwebs, staring down at his science textbook. Even as a Time Lord, chemistry is not always easy, especially when you are thinking about something completely different, like friends. Harry tried hard to focus on the words of the page, only some of them registering in his head, Svante Arrhenius's definition...acids form H+ ions...bases...OH-...Newer...Brønsted-Lowry...donation of a proton. Harry sighed and gave up, pushing his textbook back. 'What's the point of being a super-brained alien if you can't concentrate?' he thought with a sigh.

He jumped slightly though as he felt the psychic paper the Doctor had given him heat up. Scrambling through his pockets, he pulled the offending article out and read the message, running his hand through his black mop of hair, sighing as he stared at the message. The Doctor had been using it to keep in touch with Harry during the year because letters can't be sent through the Time Vortex. He read the message over in his head. Donna and I going to Shan Shen, have organised for you to stay in Cambridge with Harold and Alberta Scrubb. They will pick you up from railway station.

He took one last look of frustration at the psychic paper before throwing it aside and going back to revising for his science test next week.

Location: Saint Finbar's Girls School, Hendon, London, England, Earth
Time: July 1942 CE

Just across the road from where Harry was revising for science, Lucy was trying hard to revise for an upcoming Maths test, but nothing about geometry or algebra was sitting right in her head. 'Why do nine year olds care about this stuff?' Lucy thought frustratedly.

'Pevensie! You got a letter.' The harsh voice of one of the Head Girl's many lackeys poked her head through the door and tossed a letter on the floor next to the bin. 'Ooops silly me, nearly in the bin.' The girl said with a sickly sweet voice, cackling evilly as she continued along the dormitory hall. Lucy repressed the urge to chase the girl and give her a piece of her mind. It wouldn't do to get a weekend detention and a letter home. The Head Girl and her friends had been torturing her all year, seeing as she was the youngest at the school, and Susan was too busy getting caught up in dating and makeup and whatever else, trying to forget about Narnia to worry about Lucy's problems.

Lucy huffed to herself, 'I wasn't always the youngest and least popular. I was a beautiful and much loved Queen. Aslan's golden child.' Her mutterings about Aslan always drew a smile, and now she was in a better state of mind, she bent down to pick up the letter. She opened the envelope, and by the time she finished reading the letter, she had to resist the temptation to tear it to shreds. Peter and Susan would be spending summer in America with their mother and father, while Edmund and herself would be staying in Cambridge with Harold and Alberta Scrubb and their foul son Eustace Clarence (if anyone deserved such a name, he did). She read the letter over and over, hoping that she was just hallucinating and it said nothing of the sort, but no, she looked inside the envelope, and there were two tickets to Cambridge from Liverpool Street...no wait a minute, Lucy counted again and there were three. Lucy looked back at the letter in confusion and noticed a postcript, Doctor Smith, the guardian of your friend Harry and his wife have been sent to Shan Shen (I assume it is in China) for work and cannot take Harry for the summer so the Doctor and I organised for your Aunt and Uncle to look after Harry too. Be a dear and give him the third train ticket for me.

Lucy smiled slightly knowing that Harry would be there too, although she had absolutely no idea how or why Harold and Alberta agreed to look after a boy that knew nothing about save for that he was best friends with their niece. Then again, Harold and Alberta never had made any sense to Lucy, even her Maths homework made more sense than the slightly unconventional Harold and Alberta. She sighed to herself before going back to her revision.

Location: Liverpool Street railway station, Camden & Islington, London, England, Earth
Time: July 1942 CE

Harry, Lucy and Edmund sat on a bench seat on Platform 2 as they waited for the train that would take them to Cambridge for their summer holiday. Lucy yawned as her head fell to the left, resting on Harry's shoulder and Harry was reminded of just how early they had had to wake up to get to the station. Due to a ticketing mix-up, the train to Cambridge they were now booked on was due to leave London at 7am, which meant that the trio had had to leave Hendon at 4:30 to ensure they made it in time, having taken the train from Hendon to St Pancras before taking a bus from Pancras Road to Liverpool Street, finally arriving at the platform and collapsing into a bench seat to wait.

Finally, after 15 minutes waiting, the guard allowed passengers to board the train and the trio took their seats; Harry taking the window seat with Lucy sitting beside him, resulting in Edmund making very mature kissy faces as he so often did when around Harry and Lucy together. Harry and Lucy glanced at each other at this, then pooked heir tongue out at Edmund in unison. 'How sweet! They even synchronise their comebacks!' Edmund joked as he took the seat opposite them in the compartment.

Location: Cambridge railway station, Cambridge, Cambridgeshire, England, Earth
Time: July 1942 CE

Lucy, Harry and Edmund stepped off the train in Cambridge and made their way to the station entrance, but Lucy and Edmund were dismayed to see that Harold had brought Eustace when he came to pick them up. Eustace and Edmund were immediately at each other's throats about anything and everything. After a very tedious 15 minute walk, the trio were able to escape upstairs. Harry and Lucy both had rooms to themselves, albeit the two smallest in the house as Lucy was of course the only girl, and Alberta did not want "her Eustace sharing his room with a strange boy", and so Edmund was the unlucky one to have to share with Eustace.

Author's Note: So that's the first chapter up. I have a fair few already written, but I'm reading through and making slight changes as I post, next one will hopefully be up later today or tomorrow, but university is back, so no guarantees that I'll have a chance to make regular posts. I'll do my best though. Please read and review, and stay tuned for the next installment.