Perfectly fine, but unremarkable.

My biggest problem with a lot of these old six-episode serials is a lack of cohesion. The storyline we have at the start is not same storyline we have at the end. It jumps around too much.

C. Maybe B.

A sequel of sorts to the Silurians, as the Sea Devils are of the same species and want to emerge and take back planet earth. This isn't as good as that story though. The sea Devils look cool, better than the Silurians, but seem less intelligent than them. The Master is good as ever. Too many episodes, it would of been a stronger 4 parter.

Once again, a very good story. I felt this story was a great continuation of the Master's arc, as well as being a sequel to the Silurians, but above all it felt like a really high budget (comparatively) story with all of the stuff at sea, with a lot of great comedic moments. Some stand outs for me were the Master watching the Clangers, the Doctor playing blindfolded golf to pass some time, and him repeatedly stealing other people's food, all of which combined made this probably the funniest classic story I've seen so far. It feels like Jo is being developed a lot more this series, which I like, and alongside the last serial, this is shaping up to be my favourite season so far.

Jo and the Doctor continue to have amazing chemistry. They go on a little trip to visit the Master in prison. The three of them talk for a little bit, everyone is very polite. And Jo Grant, who has been mind controlled and almost killed by the Master several times, smiles at him and waves goodbye when they leave, completely unironically. This girl has my entire heart. Someone please get her a sandwich, the Doctor ate all of hers :(

The whole plot is pretty good, the Sea Devils look amazing, all the side characters/villains are great, specially Capt. Hart and Blythe, the clever secretary. The pacing is also great, which is a must for a 6-parter. You can really tell the BBC was giddy with how much stuff the Navy was letting them use for this story: so many guns and boats of all types. The Master and the Doctor on little jet skiis. Jo Grant driving a motorcycle and that huge floater boat thing. 10/10.

The fencing fight is incredibly silly and instantly iconic. Jon Pertwee is chewing that sandwich as fast as he possible can to be on time for the cue for his next line. Amazing.

Jon Pertwee era stop being boring challenge impossible

The Sea Devils begins brilliantly with the Jo and Doctor on a boat, visiting a small island prison dedicated the imprisonment of one man: The Master. The build up to The Doctor's encounter with his arch nemesis is very well handled, once they are on land we pass heavy surveillance, armed guards and identity checks before being allowed anywhere near him. This suspenseful introduction reminded me of Hannibal Lecter, even more so when the excellent twist is revealed; the entire prison is under his control.

The introduction shows that the story's primarily purpose is not to be a sequel to the Silurians (Eocenes, Sea Devils, etc.) but to explore The Master's relationship with The Doctor. Whilst The Master steals the show (proving what a special treat he can be when not overused) the Sea Devils are a real flop when compared to their land dwelling cousins. Whilst they *can* speak, I can't recall many scenes in which they choose to do so. I criticised The Silurians for introducing the species as highly intelligent, but then failing to deliver this in terms of their presentation or speech. In The Sea Devils the problem is made worse, they are mostly mute villains without a trace of their supposed super-intelligence. Are they supposed to be considered intellectual compare to humans, or just all other Earth animals? Last week's The Curse of Peladon had seven races (Human, Peladon, Time Lord, Ice Warrior, Aggador, Alpha Centauri and Arcturus) only one of which I would consider to be less intelligent then the Sea Devils. This problem undermines the entire plot, it rids these creatures of one of their key distinguishing features.

The Silurian element of the plot is also hampered by the fact that we've already seen the same scenario played out two seasons ago. Swapping underground creatures to creatures from the sea adds no more than visual difference. This lack of substance means that their elements of episodes three to six drag terribly. It would have been preferable for them to see where The Silurian race was two years later, after being betrayed by UNIT. It would be amazing to see some righteous (and justified) ire directed at the human race.

The Navy's contribution to this story is highly significant, both The Master and The Doctor feel very at home in this hierarchical environment. Seeing The Master flit in and out of prison, then be saluted by a large group of naval officers makes him by far the coolest man in the show, his escape via hovercraft at the end of episode six is just as ostentatious. It is wonderful to see how this villain has grown. The Master does not just want to cause havoc, he wants to cause it in style.

They have made a conscious decision to not include UNIT in this story, it would have been nice to have a cameo appearance - especially as we were shown so many Navel equivalents to our favourite characters. For all my talk of loving variety, I must say that I've missed UNIT over the last couple of stories!

As time has gone on I have felt more and more attached to Jo, she is a truly excellent and versatile companion. In the previous story she was glamorously scaling buildings and here, I am also in love with Pertwee's Doctor, even if his attempts to make lofty, pretentious James Bond-like statements sometimes gets under my skin. Together these two make the best and most natural duo the show has seen so far.

I had an excellent time with the Sea Devils. While the story is a standard affair considering this era, I'm most impressed by the amount of resources the crew put into filming around water, and a pretty cool set for the Master's prison. The Sea Devils themselves look just okay but I think compare well to something like The Silurians. Overall, I had a good time. The Master, Jo, and the Doctor are all a lot of fun here - everyone has good chemistry with each other and it is just easy to let Pertwee's charm just carry you through the story. Most of the guest actors are quite solid, too. Just when I think the premise started wearing thin, the story is brought to an end, and I'm left with a pretty fond feeling towards this story overall.

Sometimes in Classic Who you find the longer serials (or to be fair, any serials) don't have enough plot to fill their time. I'm so glad The Sea Devils is not one of those

I liked the plot and the acting, the Sea Devil costumes are charming, and the location filming was enthralling (shout out to the sea <3). The Doctor had a sword fight with the Master, stole his sandwich, and then stole Jo's sandwich too. What more do you want from Doctor Who