The moment they were back inside the TARDIS Rose broke down. This was the third time she had seen her father die and it hurts every time. She felt the Doctor moving her until he sat her down, still holding her.

The Doctor felt her when she finally fell into an exhausted sleep. Picking her up he carried her to their room and gently lay her down before stripping her to her underwear he slid one of his jumpers over her. Placing his fingers to her temple he sent calming thoughts to her to help her rest before heading back to the console to tinker.

They've been in each other's minds so much that their now a constant presences in each other's minds. Slowly with more contact their bond would strengthen, he's just happy he can feel someone else in his mind again. She'll never be as strong as another Time Lord would be but her mind is strong and she doesn't even know how much she's healed him. She gave him back something he thought he had lost and for that he could never pay her back. He might even go so far as to love her more than ever.

Rose woke up feeling much better, even better was when she rolled over and found the Doctor lying there watching her.

"Good mornin." Rose greeted with a small smile.

"Mornin." The Doctor saw sadness in her eyes but he could also see that over time she would feel better.

"Would you," Rose swallowed nervously as she asked. "Would you tell me about your fourth incarnation?"

Rose slapped his arm lightly and gave him a disapproving smile as he admits to trying to sneak off, leaving Sarah Jane behind but unfortunately he was caught and pulled into an adventure. In the adventure he mets a new companion and the very first robot dog K1 plus foiling a plot to create a new disintegrator gun.

The Doctor then explains how him, Sarah and Harry land on another ark type space ship and find an alien insect trying to take over the ship while the crew slept. They then end up on what they think is a deserted Earth when they find a lone Sontaran that is running experiments on a few astronaughts that had crash landed.

He then explains that him and his companions are intercepted by the Time Lords and ordered to go back to the beginning of the Dalek race to destroy them. It was then that he mets the creator of the Daleks, though he failed to stop their creations he did hinder them for a thousand years or so. They use a time ring given to them by the Time Lords to head back to the TARDIS but they land a thousand years earlier.

While waiting for the TARDIS to come back to them they encounter Cybermen and that they have been poisoning the crew. They are called back to Earth by the Brigadier to investigate oil rigs being destroyed in Scotland. That is where they encounter Zygons that can shape shift into anyone and the Loch Ness monster who is actually an alien. It's also where Harry decides to stay behind.

Him and Sarah then land on a planet and met an anti-matter monster that just wants the anti-matter particles back from an Earth expedition team. They then end up in 1911 where they encounter an Egyptian mummy then they end up in what they thought was an empty English village to then watch as androids appear disguised as villagers.

The Time Lords then divert him again to the planet of Karn where they encounter an alien trying to create a body for Morbius, a Time Lord thought to have been executed years ago and the Sisterhood of Karn who protect the flame of life which creates the elixa of life. The Doctor and Sarah then encounter seed pods which spread a planet that eats all animal type creatures but with units help they manage to stop it.

An encounter with the living energy structure known as the Mandragora Helix leads the TARDIS to 15th century Italy. The Doctor and Sarah are then caught in a mining explosion. Sarah is found clutching what appears to be a fossilised hand, buried in a 150-million-year-old stratum which ends up reforming into an alien criminal called Eldrad. Eldrad forces the Doctor to take her back to her home planet.

The Doctor then leaves Sarah on Earth as he receives a summons from the Time Lords and humans aren't allowed. The Doctor returns to his homeworld, Gallifrey. When the President of the High Council is assassinated, however, he became the prime suspect. However he mets the Master again who was the real assassin. The Doctor, travelling alone, arrives on a planet where two tribes are at war and discovers that their god of evil is himself. A female tribe woman named Leela who helped the Doctor then jumps into the TARDIS despite the Doctors refusal and they head off.

A vessel is commanded by a crew of indolent or avaricious human staff. It is a happy partnership until the human crew start being murdered one by one. The Doctor and Leela then travel to Victorian London where they encounter a sinister Chinese stage magician and his master, a fugitive from the 51st century.

Rose had to laugh as she remembered the prudish Queen Victoria and the 51st century Jake meeting. The Doctor gives her a quizzical look so she explains. "Considering how prudish the Victorian age was compared to the 21st century. I can imagine how much worse they would be in the 51st century." The Doctor had to concede that she had a point.

Three lighthouse men face their fears when something comes in from the sea, which brings death to all it touches. The Doctor discovers that it was an alien called a Rutan, the hereditary enemy of the Sontarans. A shuttle crew encounters a cloud in space that infects them with an intelligent virus. When the Doctor answers the distress call, he is infected as well. It is also where they find K-9 and after his helping them the scientist that created K-9 offers for the Doctor to take him with them.

Then the TARDIS is pulled of course and the Doctor finds scientists investigating an ancient skull who unwittingly start to revive the Fendahl, an ancient life-form feared even by the Time Lords. In the far future, the planet Pluto is habitable, heated by several miniature suns. However, the heat is available only to the ruling classes where the Doctor finds the Company that controls the Suns are being controlled by an alien called Usurian.

The remnants of the Minyans have an old link to the Time Lords. The Doctor must help them to find the hidden race banks that will save their dying race. The Doctor returns to Gallifrey, having claimed the Presidency. He orders Leela expelled from the Capitol Citadel. However, the Doctor is doing this to prevent a Sontaran-instigated disaster. After the disaster is averted Leela stays behind on Gallifrey and K-9 stays with her however the Doctor had already created another robot dog called K-9 M2.

The Doctor is summoned by the mysterious and powerful White Guardian, and sent on a quest to find the six segments of the Key to Time, which, once assembled, will restore balance to the Universe. Joining the Doctor and K9 is the smart and sassy Romana, a Time Lady fresh from the Academy. Landing on the wintry planet of Ribos to locate the first segment, the TARDIS crew quickly find themselves embroiled in a little local trouble with a pair of conmen and an unstable warlord.

The Doctor and Romana learn the second segment of the Key to Time is on the planet Calufrax. Yet they arrive on a planet called Zanak, which has been hollowed out and fitted with hyperspace engines, allowing its insane, half-robot Captain to materialise it around smaller planets and plunder their resources. Searching for the third segment to the Key to Time brings the Doctor and Romana to present-day Earth, where the travellers have to contend with stone circles, Druidic rituals and a not-so-mythical goddess known as the Cailleach.

Finding the fourth segment of the Key to Time was simple enough, but holding onto it may be another matter. The Doctor and Romana find themselves embroiled in the political games of the planet Tara, where doubles, android or otherwise, complicate the coronation of Prince Reynart.

The Doctor and Romana arrive on the marsh moon of Delta Magna in search of the next segment of the Key to Time. They are caught in the conflict between the native Swampies and the crew of a chemical refinery. The presence of a gun runner complicates matters; to make things worse, the Swampies intend to awaken Kroll, the giant god that lives beneath the swamps

The final segment of the Key to Time is at the heart of a devastating war between neighbouring planets Atrios and Zeos. The Doctor discovers that a sinister entity is manipulating events and the cost of obtaining the final segment may be more personal than he imagined. He finds out it was the Black Guardian and not the White Guardian that wanted the Key to Time so the Doctor disperses the Key to Time back into the universe and using a randomiser they run from the Black Guardian

The TARDIS lands the Doctor and Romana on a strangely familiar planet. There, they meet the android Movellans, who are locked in a war with the Daleks. The planet is Skaro, and in a bunker sits an enemy long thought dead — Davros, creator of the Daleks.

The Doctor is enjoying a holiday in Paris with Romana when, armed with several Mona Lisa's, he uncovers an alien conspiracy that could result in the loss of all life on earth. On hearing a distress signal they end up on the planet Chloris, the Doctor and Romana soon find themselves caught up in a long and secret enmity between the Lady Adrasta, who rules the planet in fear, and the mysterious Creature that she keeps in a Pit.

The TARDIS lands at the site of a hyperspatial collision between two spacecraft - as a result of which, neither ship is dimensionally stable, risking the lives of all those aboard. After colliding with a spaceship, Rose can't help but comment about how many times the TARDIS is captured or collides with something and remarking that he needs to take better care of her, which the TARDIS agrees with. The Doctor, Romana and K-9 learn that young natives from a peaceful planet called Aneth are being transported into a great labyrinth called "The Power Complex".

The story revolves around the lost planet Shada, on which the Time Lords built a prison for defeated would-be conquerors of the universe. Skagra, an up-and-coming would-be conqueror of the universe, needs the assistance of one of the prison's inmates, but finds that nobody knows where Shada is anymore except one aged Time Lord who has retired to Earth.

Finding out-of-season Brighton beach somewhat lacking, the Doctor and Romana travel to the leisure planet Argolis - but there strange experiments are taking place. The Doctor leaves the randomiser on a device leaving them vulnerable to the Black Guardian. The Doctor and Romana then land on Tigella, two opposing factions are irrevocably divided over one fundamental issue: the Dodecahedron, a mysterious object which provides the entire planet's energy. As they were about to depart they receive a message from Gallifrey, ordering Romana to return.

En route to Gallifrey to return Romana to the High Council of Time Lords, the TARDIS passes through a strange phenomenon (a CVE or Charged Vacuum Emboîtement) and ends up in an alternative universe called E-Space. It is here that another companion Adric stows on board the TARDIS. Again Rose laughs and at the Doctors curious look remarks. "So much for Gangis Khan approved doors, the amount of time that humans have been able to stow on board."

After the events of Full Circle, the Doctor's adventures in E-Space continue with his arrival on a medieval planet. Villagers live under the thrall of three lords who dwell in a shadowy Tower. Then when in the vortex Time Winds strike the TARDIS, damaging it and K-9. Strangest of all, it allows Biroc, to enter, phased in time, sending the TARDIS into a milk-white void. After freeing a race called Tharils Romana, not happy with returning to Gallifrey decides to stay and help so the Doctor gives her K-9 to help and in return the Tharils told him how to return to N-space.

The Doctor and Adric arrive back in N-Space in an empire of peace and harmony. They are surprised when the elderly Keeper of Traken appears in the TARDIS to ask for their help in rescuing the Union from a secret evil growing in its midst. He also encounters the Master yet again, but he's horribly disfigured.

The Doctor is warned by the TARDIS's cloister bell that dangers approaching. The Doctor goes to Earth to take fresh measurements of a police box to repair the TARDIS. A figure in white observes. All the while, the Master lurks in the shadows. The Doctor falls at the end thanks to the Master and ends up regenerating with help from the white figure who they realise had been the Doctor all the time.

The Doctor finishes at the end of his fourth incarnation and catching something out of the corner of his eye turns to see the TARDIS projecting his adventures for Rose to see. He turns back to see Rose blushing at being caught. "Has she been doing that all this time?"

Rose nodded slightly, hesitantly. "I'm sorry."

The Doctor sent her a soft smile. "It's ok, some adventures you have to see to understand."

The Doctor took Rose on more adventures as he tried to distract his mind and body from a conclusion he's not sure he wants to fight anymore. He's never had this problem with other companions, he's always been able to keep them at a distance but not Rose. It was after their last adventure where another pretty boy, this time a king, tried to force Rose to marry him that he decided that he wants that sort of relationship with him. He knows that it'll hurt when he finally losses her but doesn't it hurt anyway and he has a feeling no matter if they stay friends or not it would devastate him when he losses her.

The Doctor could feel the TARDIS's excitement and wondered not for the first time why she seems to like Rose so much.

This will be the last time that I talk them through the Doctors regenerations, now that you know the TARDIS had been showing Rose the adventures I'll just let you know when their watching them as I won't Rose to know everything before he changes but there are only a few episodes left.