THE ARK

The Monoid Olympics, where you can step up to gold by eliminating
the opposition. 

Season: 3
Episodes: 4
Broadcast Dates: 5-26 March 1966
Producer: John Wiles
Script Editor: Gerry Davis
Writer: Paul Erickson, Leslie Scott
Director: Michael Imison
Regular Cast: William Hartnell (Dr. Who), Peter Purves (Steven), Jackie Lane (Dodo)

The Plot: The TARDIS arrive on the Ark, a generational spaceship taking the remnants of the human race to planet Refusis II ('cause our Earth is about to blow up). Trouble abounds when Dodo's cold infects the crew.
We Like: The goofy Monoids and the fact that the serial is essentially two stories using the same sets and costumes.
We Dislike: Speaking of costumes, check out what humans will be wearing in a couple of millenias. The notion of Fashion Faux Pas seems to have vanished in the haze.
Rating: 3

THE MASSACRE

The Doctor and Steven enjoy a drink before the upcoming murder and
mayhem. 

Season: 3
Episodes: 4*
Broadcast Dates: 5-26 February 1966
Producer: John Wiles
Script Editor: Donald Tosh
Writer: John Lucarotti (x3), Donald Tosh
Director: Paddy Russell
Regular Cast: William Hartnell (Dr. Who), Peter Purves (Steven)
Joining In: Jackie Lane (Dodo)

The Plot: And what a plot! The evil Queen Mother Catherine de Medici is plotting not only to assassinate a too-popular protestant admiral. but use the murder to cook up one hell of a shit storm.
We Like: Quite possibly the grimmest Dr. Who story ever, written by the king of historicals. The kids at home must have been gobsmacked! And then there's Hartnell playing the evil Abbott of Amboise.
We Dislike: This marks the arrival of Dodo Chaplet. 'Nuff said.
Rating: 3.5

* All episodes missing as of July 30, 2014.

COMPANION FOLLOW-UP: KATARINA

Katarina ponders on why the realm of the dead
needs all these doohickeys and thingamabobs. 

Katarina was the handmaiden of Trojan prophetess Cassandra. When the Doctor became involved in the last days of the Trojan War, Katarina befriended Vicki, then known as Cressida. At the end of the war, believing the Doctor to be a god, she willingly decided to join him on his journey.

Origin: Earth, ca. 1190 BC.
Season: 3
Tenure: 6 November-4 December 1965
Reason for Leaving: Taken hostage by a Dalek agent who wanted to use her as leverage, she committed suicide to kill the agent and prevent the Doctor from going back to Kembel.
Assessment: Katarina, we hardly knew ye! Not much to say, as there's only a single episode featuring her and she doesn't do much except taking care of the wounded Steven. Katarina believed the Doctor was taking her to the afterlife. In retrospect, she was quite right about that.

COMPANION FOLLOW-UP: VICKI

"The Doctor wanted to take us to 18th century Paris again, but that's sooo
last year!"

Vicki was a passenger on board the spaceship UK 201 en route to planet Astra. However, the ship crashed on planet Dido and this is where things went wrong. The only other survivor was a man named Bennett who pretended to be paralysed. While not paraplegic, it appeared that Bennett was certifiably insane.

Origin: Vicki is from the late 25th century, though it is never specified if she's from Earth, exactly.
Tenure: 2 January-6 November 1965
Reason for Living: Just like her predecessor, Susan, Vicki unexplicably fell in love with someone she barely knew, and belonged to a different time than her own. However, she will serve as inpiration for a Shakespeare play.
Assessment: To be honest, Vicki was always intended as a copy-paste replacement for Susan Foreman. But that,s where all similarities end. Vicki was certainly a superior companion: smart, witty, resourceful and mature beyond her years. Vicki is certainly not one to be afraid of her own shadow. Her best sierials are The Romans (nice double act with the Doctor, there), The Web Planet (for the well-written interplay with Barbara) and The Space Museum due to her nderstanding of space and time and the fact that she's the one who organises the Xeron Rebellion

THE DALEKS' MASTER PLAN

The simmering anger and resentment felt by companions from time
to time get a voice in Sara Kingdom, whose first job was to kill the
Doctor. 

Season: 3
Episodes: 12*
Broadcast Dates: 13 November 1965-29 January 1966
Producer: John Wiles
Script Editor: Donald Tosh
Writer: Terry Nation (x6), Dennis Spooner (x4)
Director: Douglas Camfield
Regular Cast: William Hartnell (Dr. Who), Peter Purves (Steven), Adrienne Hill (Katarina), Jean Marsh (Sara Kingdom), Nicholas Courtney (Bret Vyon)
Jumping Ship: Katarina, the first companion ever to get killed off.

The Plot: The Daleks have allied themselves with the Guardian of the Solar System to betray the entire galaxy. And you thought President Obama was bad!
We Like: Episode 2 is the only extant episode featuring Katarina, so it's good to know she hasn't been erased from history. The rest, well, we only got about a fourth of what was shown so...nevertheless, pretty exciting.
We Dislike: Some of the middle episodes don't have anything to do with the plot, so just sit back, relax and watch Dr. Who have a toast on ye!
Rating: 3

*Only episodes 2,5 and 10 exists as of July 29, 2014.

THE MYTH MAKERS

The wise Doctor is apparently agreeable to a fool's bargain with a con
artist and a rake.

Season: 3
Episodes: 4*
Broadcast Dates: 16 October-6 November 1965
Procuder: John Wiles
Script Editor: Donald Tosh
Writer: Donald Cotton
Director: Michael Leeston-Smith
Regular Cast: William Hartnell (Dr. Who), Maureen O'Brien (Vicki), Peter Purves (Steven)
Jumping Ship: Vicki, another victim of Sudden Companion Romance Syndrome (or SCRS).
Joining In: Adrienne Hill (Katarina)

The Plot: In his definite version of the Iliad, Homer seems to have completely forgotten the Doctor's involvment with that Trojan Horse bit.
We Like: Another comedy episode, this time replacing farce with satire. Cotton should have written more.
We Dislike: And yet another comedy episode that ends in tragedy. Doctor Who has very strange ideas about what constitutes funny, apparently.
Rating: 3.5

*All episodes missing as of July 28, 2014.

MISSION TO THE UNKNOWN

For their latest dastardly plan, the Daleks have kidnapped the cast of a
popular children's show to do their evil biddings. 

Season: 3
Episodes: 1
Broadcast Date: 9 October 1965
Producer: Verity Lambert
Script Editor: Donald Tosh
Writer: Terry Nation (x5)
Director: Derek Martinus
Regular Cast: Barry Jackson (Jeff Garvey), Edward de Souza (Marc Cory), Jeremy Young (Gordon Lowery)

The Plot: Two special agents land of planet Kembel and realise the Daleks have made some interesting friends.
We Like: It's the first, ever Doctor-less episode, as none of the regular cast appear. Kembel itself, just a shade less dangerous than Skaro.
We Dislike: It's actually the prologue for The Daleks' Master Plan. Since it was followed by a completely different serial, fans had to wait a month before the rest of the story.
Rating: 3