In the middle of the Battle of Hogwarts, two unlikely men show up wanting to help Harry Potter and the Order. But who are these men? What are they hiding, and can Harry trust them? Also, what is Voldemort planning?

Merlin has a new task: protect Harry Potter. And if that means going back to Hogwarts, then so be it. With Voldemort attempting to return and a certain reincarnated prat, Harry's life at Hogwarts will get a lot more interesting. ABANDONED.

Time has flowed on. Memory has passed through legend into myth. For all but one. But as a new prophecy is spoken Merlin must make a choice. Does he await the return of his king, or does he delve into a new world of magic?

Hermione discovers the location of a book that may help them in their D.A. lessons. Is it as simple as it looks or does a bigger secret lie behind it? What happens when ancient and modern magic are woven into each other? And what is the secret behind this mysterious figure roaming the halls of Hogwarts? Now continued

For seventeen hundred years Merlin awaited the return of the Once and Future King. He was an immortal figure in a mortal world, bound to the Earth through the power of the Old Religion. As a familiar evil arises, Merlin returns to Hogwarts to face his most challenging obstacles yet. The time of Destiny has come. Welcome to the beginning of the end. Set during Triwizard Tournament

Merlin has been murdered, slaughtered by Morgause and Morgana. However, as our heroes set out to avenge their friend's death, they find that things aren't always as they seem...Can they save Merlin? Does he want to be saved? What evil lurks beneath the surface? Angst! Protective!Arthur Dark!Merlin Freylin! Reveal-fic! Disclaimer: I don't own Merlin-all rights go the BBC & Shine!

What happens when group of actors meet up with their characters? This is the sequel to "A Day in the Lives of Sherlock Holmes and John Watson"! (fandoms: sherlock, doctor who, supernatural, merlin, avengers, star trek, harry potter, torchwood, and pirates of the Caribbean)

Sequel to Ancient Relics. Voldemort and Morgana are dead and Merlin is ready to enjoy his new mortality. But a shadowy group calling themselves the 'Liberators' are causing trouble and campaigning for an end to the International Statute of Secrecy. Merlin is faced with some difficult choices and must rely on his friends to help him on a journey through time to fix past mistakes.

In which Sherlock struggles not to let his other addictions get the best of him, and John misjudges a cold. (Warning: self harm fic)

The year is 2019, Merlin has waited over a thousand years for his master, but now he cannot wait any longer. The magic in the earth is forever growing weaker, and he needs help, not only from Arthur, but from a wizard who left this sort of life behind 21 years ago, and Harry Potter is less than happy to go back to it.

During Harry's second year, the Chamber of Secrets is opened and muggleborns are targeted, courtesy of Slytherin's basilisk. But this time, the basilisk isn't the only thing that's been unleashed...HP/Merlin Crossover. VERY AU.

"Oh, this is how it all ends; Pond, flirting with herself. True love at last." "I think you mean Potter, not Pond." "No, I think he means Evans, you prat." "Just how many of me are there!" - When the TARDIS crash lands in another dimension of time and space, the Eleventh Doctor discovers that his dear Amelia Pond is extraordinary in every universe, by any name.

The sequel to "Sleepwalking Hunter!" A temporary stay led to a permanent placement. A nightmare led to the spilling of a lifetime of secrets; secrets that would take a lifetime to unravel and a lifetime to repair the damage of the fragile state Shawn was left in. Someone must be punished, but who will truly pay at the end of the day?

Just another year at Hogwarts for Harry. Yup. Except his new professor is definitely odd.

AU OotP AfterMS5. Merlin had always watched as the wizarding world fought for justice. He watched Harry Potter grow up as a young warlock struggling against Voldemort. At the Department of Mysteries on Thursday evening when a deadly battle was playing out concerning Harry's destiny Merlin Emrys decided it was time to step in. He will join the fight. This time. 8th Aug NEW CHAPTER

Merlin trying to make it through the anniversary of Arthur's death. Merthur, reincarnation, all that good stuff.

"She had an awful lot of running to do because she was going to do what any little girl would do when she was sad and scared and confused; she was going to find her dad." We last saw Jenny with the 10th Doctor, but where is she now? The 10th Doctors gone and the 11th doctor thinks Jenny is dead, so why is this paradox hurting him and this small, lost girl? RatedT for mild language

When Arthur woke up at the bottom of a lake only to be saved by a giant tentacle monster, he was upset. When he dragged himself up to his castle and found that it was a school for sorcerers- he was upset. Now he has to play nice with them and wait for his best friend and the most famously powerful warlock in existence - Merlin Famous! - to find him and figure out why he has woken.

While at John and Mary's wedding, Sherlock meets an interesting guest. (DISCLAIMER: I DO NOT OWN SHERLOCK OR DOCTOR WHO OR ANY OF ITS CHARACTERS, ETC).

A one-shot based on an image I found: John convinces Sherlock to finally watch Doctor Who when they get a surprise visit in their flat.

Merlin didn't sleep often, but when he did, he dreamed.

When a mysterious force of dark magic arrives, Harry Potter is about to discover there are more things out there than he can even dream of.

Prequel story for 'Ancient Relics'. Merlin has spent the three hundred years since Arthur's death hiding in the shadows waiting for the return of the Old Religion. Now, after a tragic event, he has found four unique individuals who may just be the ones he has been waiting for. The ones who can end his torturous immortality and restore the glory of Camelot. Founder's Era.

Just a little one shot before the Waters of Mars and after Merlin season 5.

Some of your favorite actors assemble as they take on the streets of London as their characters. What could possibly go wrong? (Includes actors from: Sherlock, Doctor Who, Supernatural, Avengers, Merlin, Pirates of the Caribbean, Harry Potter, Star Trek, and possibly more…) (i do not own the logos in the cover photo i just put them together)

The Rift monitor is acting up again, but Jack knows exactly who's causing the disturbance.

After Arthur's death, Merlin can't find anything to live for. He goes throughout his days in a daze. That is until he meets a mysterious stranger on a bus in London who says he can help.

The Torchwood crew are alarmed when the rift pushes out a long dead fictional king and his mysterious man servant. (First in a series) Gift for Merthur True Love (/u/1055040/)

When the TARDIS lands in London 1786, the Doctor and Clara spot a man standing on the edge of a grand bridge obviously about to commit suicide. What they don't realize is that they're going to run into someone who is infinitely more powerful than they could ever imagine. One-Shot. Post Trenzalore, Post 5x13.

During Merlin's long wait he comes across a man- with silvery long hair and half-moon spectacles-that enlists his help to protect innocent children. "Actually, Mr. Thomas, I come on my own on behalf of an old friend. We need desperately the service of a Dragonlord."

Midnight's surface was made of toxic, beautiful diamonds, but Merlin always thought Gold was prettier. Gold and Rubies. One shot with a possibility of becoming more.

"He saw the other man give him a look, not of sympathy, but of empathy. A look that whispered, 'You're not alone. I know. I understand.'" The Warlock and the Last Centurion, both waiting for someone else, have a lakeside conversation. Perhaps they're more similar than anyone could have imagined... Spoilers for the Merlin S5 finale and the Doctor Who S5 finale. One-shot.

Professor McGonagall tells her students the truth about the great Merlin.

Merlin is forced to live without his friends from medieval Camelot as time and fate has cruelly taken them away from him, but can the Doctor help him find happiness again? Rated T to be safe.

When the Doctor is on the train to the Sapphire Waterfalls, he comes across a boy who isn't really a boy after-all. A journey to the past reveals some secrets, danger, and adventure for The Doctor, Donna, and future!Merlin. Merthur fic. Rated for later chapters.

Merlin Emrys has been waiting thirteen hundred years for this moment to arrive. Can he fulfil the destiny that is required of him? Will Harry learn to trust this mysterious stranger? The fate of the Old Religion and the entire wizarding world depends entirely on them. AU for the last part of Deathly Hallows. Set after Series 4 but written before Series 5. REVISED 08/01/14

Harry and Co. move to Forks after the final battle to start a new happy life but trauma has hit them all hard and trouble is never far. Their old enemy isn't giving up so easily and they're going to need help from the resident vampires. ECxHPslash

It had been a thousand years since Merlin had sent Arthur to Avalon, and the weight of the departure wore him down over the long years he spent waiting. But a friend that he thought he could rely on, who was dealing with his own pain, offered to help by taking Merlin home, and perhaps bringing back a piece of that home with him.

The Doctor and his TARDIS break down in Camelot, and discover Merlin mourning the death of Arthur. The Doctor does what he does best, and helps him to deal with living without Arthur, until the right time comes and Arthur returns. Includes the 10th Doctor and the 11th Doctor and the reincarnation of Arthur.

Merlin goes wherever his feet decide to take him, which one autumn morning, just happened to be the swings of a children's play area. Short 'n' sweet one shot modern Merlin/Doctor Who crossover thingy, based on the prequel to the bells of saint John.

If Mr. Anderson in Perks of Being a Wallflower was really Blaine, he probably went home and talked to Kurt about Charlie every night. This is that story. COMPLETE.

The Doctor surprises Merlin with a visit on Valentine's day. What could he possibly want? Mildly implied Merthur.

When the Doctor first met Merlin, he didn't think much of him. But then he kept meeting him. And eventually, the young boy from Camelot becomes one of the Time Lord's closest confidants. Both 10 and 11 appear. Crossover: Doctor Who/Merlin. No pairings. AU.

The Doctor finds Jethro watching the sunlight, and they have a conversation which is not the slightest bit illuminating. Doctor/Who Merlin crossover, drabble, set post-Midnight. Merlin/Arthur implied, Doctor/Master and Doctor/Rose implied.

Captain Jack Harkness meets the Doctors Song in a bar after their wedding. Heartfelt conversations. Set after CoE. ONESHOT.

Sequel to The Death God Alliance. Nico, Percy, Sadie, and Carter must work fast to prevent another inter-pantheon incident when mysterious deaths start occurring at Camp Half-Blood right after the Kanes are accidentally picked up in a demigod extraction.

When Merlin finds himself lost in a strange and alien modern Cardiff, he becomes freinds with Torchwood, who work to try and re-unite him with Camelot and his destiny. Will they be able to get him and Arthur to safety before Camelot is brought down?

Two men who appear much younger than they really are meet by chance and have a discussion about their unnaturally long lives, setting of a chain of events none of them expected. Read and review if you please.

A sort of 50 First Dates meets Reincarnation fic. What if an accident prevents Merlin from remembering Arthur? Warnings: Amnesia. Reincarnation. Some swear words?

"Sorry," said the son of Hades, "but if I surrendered to an organization called the House of Life, my dad would kill me." After a run in with the Kanes, Nico unwittingly ends up becoming a host for the Egyptian death god Anubis.

AU. Merlin is tired of the centuries in between reincarnations in which he's so alone, so he stops looking for Arthur. And yet Arthur comes back into his life, and even without his memories, Prince Arthur is playing for keeps. mpreg last two chapters.