If you could go back in time and stop the event that started somebody down the road to self-sacrifice should you do it? Lyall Lupin only wants to protect his young son Remus when the arrival of a blue police box and its unusual inhabitant forces him to make that choice.

A police box lands broken on the corner of Privet Drive. If Harry can help the Doctor fix it, maybe Harry will get to see Sirius again... A Oneshot

In which Hermione Granger is in fact: the thirteenth doctor, absolutely insane and a huge wrecking ball for The Wizarding World in general. Doctor Who and Harry Potter crossover UPDATES ONCE A WEEK

Written for THC round 4: After Albus is sorted into Slytherin he feels like he doesn't belong, but he meets a new teacher, and she gives him advice. (Note this is my first Doctor Who crossover. I'm still learning how to write the show, so this is not my best)

Two neighbors...both with secrets to keep...finally realize that they might not be so different after all.

An extremely confusing blind date that Harry arranges for Hermione ends in a wonderfully unexpected way.

A recently regenerated Doctor attends a Masquerade Ball at the request of someone who is very special to him.

There's always a perfect time for a first kiss, especially if it's the start of a new adventure.

What happens when Donna Noble doesn't die of old age, but instead regenerates? (Or: Donna Noble goes to Hogwarts)

12 characters from 4 different worlds have been chosen to compete in the games for no reason at all other then the host was bored and wanted to play! But the host didn't come on his own either. Who's really in charge here? Characters from Sherlock, Doctor Who, Harry Potter, and Supernatural! Each chapter you get to decide who lives and who dies so please read and review!

Quinn Jenkins is an average 25 year old woman who happens to time travel with the Doctor. What happens when she meets Charlie Weasley and falls in love? Will Charlie tell her about his abilities, the impending war, and will the Doctor accept their relationship? I have taken some liberty with the story lines and hope you all enjoy this story!

A Castle that stands, a Box that travels... A short story of how the TARDIS might meet Hogwarts.

What if the Doctor was wrong about the leeway the Master had when his former friend stole the TARDIS? What if it wasn't 18 months, but 18 years? Grey!Harry; Manipulative!Dumbledore; no pairings yet.

Rose Tyler est élève à Poudlard quand Harry commence sa scolarité. Mais elle s'en va après les BUSES. Mais quelques années plus tard, Harry a besoin du Bad Wolf.

The Master tries to overtake Hogwarts... Will he succeed?

Sometimes a Witch or Wizard may find themselves occupying the body of a different sentient species instead of an animal after completing the Animagus Transformation. Be warned that this type of transformation is considered a permanent change of species as there is no known reversal. 'Well,' thought Harry. 'They really should have put that warning at the beginning of the book.'

Rose Tyler finds out she's actually a Time Lord after the whole 'bad wolf' incident undoes the chameleon arch. There are more Time Lords out there waiting to just 'wake up' from their chameleon arched state. The Doctor and Rose must find them.

The Doctor thinks Dumbledore is irresponsible. Rory thinks Harry is going to get pneumonia. Amy just likes the baby. Baby Harry wants his uncle and his godfather. The Doctor obliges. Dumbledore will be very confused at the resulting eleven year old. Sirius, for his part, thinks it's a great prank. Remus just wishes he could get the Slitheen goop out of his jacket.

After the Battle of Hogwarts, Hermione Granger needs a break. She flees to America, to take the vacation she never got with her parents. A recurring dream haunts her... But what if it wasn't a dream after all?

Harry wandered alone as the Master of Death until that loneliness became too much. So Death, desperate to help his Master and give him some sort of companionship, arranged for Harry to meet another lonely man with an impossibly long lifespan. SLASH. 11/Harry

One evening, while sitting in his cupboard, Harry Potter hears the sound of hope.

In which Hermione Granger is in fact: the thirteenth doctor, absolutely insane and a huge wrecking ball for The Wizarding World in general. Doctor Who and Harry Potter crossover UPDATES ONCE A WEEK Sequel is up.

You know how this'll go. Barty Jr. is actually Ten, trying to infiltrate Voldy Boy's ranks.

Harry Potter has once again managed to land himself in trouble, this time trouble of an intergalactic kind. SLASH

As Time Lords knew, time isn't set on stone. And although they were powerful beings, they weren't gods. What would happen then if a casual encounter led to something bigger? Big enough to change the last of the Time Lords future? What would happen if a certain Time Lord discovered that there are more things in the universe than he ever expected? If he could be surprised? Slash.