Ep 4. The Next Doctor (2008)

The Doctor Who Christmas Specials season 1 episode 4, titled "The Next Doctor," is an action-packed adventure where the Doctor finds himself in Victorian-era London on Christmas Eve. However, things are not as they seem when he encounters a man calling himself the "Next Doctor" who possesses a sonic screwdriver and a TARDIS-like companion, a red hot air balloon that can travel through time and space. At first skeptical of this new character, the Doctor soon finds himself joining forces with the "Next Doctor" to solve the mystery of why there are Cybermen roaming the streets of London and what they are planning to do.

As the adventure unfolds, the Doctor and his new companion must navigate through a dangerous and ever-changing landscape filled with traps and tricks as they attempt to stop the Cybermen from executing their plan. Along the way, they meet a number of memorable characters, including the enigmatic and powerful Miss Hartigan who seems to be in cahoots with the Cybermen.

As the action heats up, the two Doctors must rely on their wits, their courage, and their trust in one another to outsmart their enemies and save London from certain destruction. Along the way, they learn more about themselves and what kind of person they truly want to be. With thrilling action sequences, memorable characters, and plenty of heart, "The Next Doctor" is a must-see for any fans of Doctor Who and science fiction in general.

Throughout the episode, viewers are treated to stunning visuals, intricate set designs, and impeccable costume design that transport them back in time to the Dickensian London of the 19th century. The use of light and shadow adds to the suspense of the story and helps to create a sense of danger and urgency for the characters.

As always, David Tennant delivers a fantastic performance as the Doctor, with his trademark wit, humor, and bravery on full display. His chemistry with the "Next Doctor" played by David Morrissey is a highlight of the episode, and the two actors play off each other brilliantly. Morrissey's performance is top-notch, and he brings a sense of gravitas and mystery to his character that keeps viewers guessing until the very end.

Overall, "The Next Doctor" is an excellent addition to the Doctor Who canonical series and a standout episode of the Christmas Specials. With its blend of humor, adventure, and heart, it's sure to delight fans both old and new. Whether you're a die-hard Whovian or just looking for some holiday entertainment, this episode is well worth checking out.