The Girl in the Fireplace is an exceptionally affecting star-crossed lovers story, with the Doctor (David Tennant) happening across a portal to 18th century Versailles and—initially reluctantly—becoming involved Madame de Pompadour (Sophia Myles) as he tries to save her from time-traveling automatons. See, they want Myles to repair their spaceship, only no one can really figure out why they need her, she’s just in danger. And at various points in her life, as the automatons, which have an absolutely fantastic design (they disguise themselves in Pantalone masks and Versailles appropriate dress), intrude and attack. Even though Tennant’s using the same time portals as the villains, they’ve got teleporters and he doesn’t, so there’s a chase to it all.
Meanwhile, Noel Clarke is along on his first TARDIS mission as a regular member of the gang and, well, he’s just along. He’s a sidekick for Billie Piper when she’s not too busy pouting about Tennant’s very obvious chemistry with Myles. And since Myles is just the latest in a long line of episode-length romantic interests for the Doctor… you’d think Piper’d be used to it. Even Clarke picks up on the jealousy and needles her a little because there’s no more wholesome a relationship than the one where your disinterested sort of girlfriend leaves you to time travel with another guy and then years later you join up even though it’s only been a few months for her on the outside.
What I’m saying is Clarke’s part is broken. Even if it wasn’t Clarke in the part.
The stuff with Tennant and Myles, which involves Tennant breaking out the mind meld the show hasn’t mentioned until this point, is absolutely fantastic. Great action, great suspense; Euros Lyn’s direction is excellent and Steven Moffat’s script is strong. Tennant’s performance is wonderful, Myles is perfect, and the bad guys are terrifying. What more could you ask for.
Besides Piper and Clarke having something to do except pout.