Recap
Jack and Tosh arrive at the Ritz Dance Hall, which has been abandoned since 1989. People have heard music from the 1940s coming out of it. They hear the music as they go in and go upstairs to investigate. They find nothing and start to leave but the sound of people talking echo through the halls. They go back upstairs and find the empty dance hall filled with people from 1941. Jack confirms it's a temporal shift. They go outside only to discover that it's night, the SUV has vanished, and they've been shifted back to January 20, 1941...
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Episode Notes
Bad Wolf graffiti from Series 1 of
Doctor Who can be seen on the stairwell behind and to the left of Jack and Tosh as they come down the stairs

A "Vote Saxon" sign from Series 3 of
Doctor Who can be seen on the outside door of the Ritz dance Hall.

This episode reveals that Captain Jack Harkness is a pseudonym for the protagonist. The character's true name has yet to be revealed.
When Torchwood's Jack Harkness introduces himself to the original Jack Harkness, he uses the pseudonym Captain James Harper.
Episode Quotes
Tosh: My grandfather’s eighty-eighth birthday today.
Jack: I thought you’d gone to all this trouble for me.
Tosh: Eighty eight is a joyous year for the Japanese. I’m off to London to watch grown men throw rice.
Jack: You can get that in the Balti after stop-tap.
Tosh: Why does that man have your name? I'm lost enough here without you holding back on me!
Jack: It's not my name. It's his. I took his. But I didn't realise he was...so hot!
Tosh: Jack?
Jack: I know too much.
Tosh: Then share.
Jack: You wouldn't want that, trust me.
Jack: I went to war when I was a boy. I was with my best friend. We got caught crossing the border over enemy lines. They tortured him, not me, because he was weaker. They made me watch him die. And they let me go.
Original Jack: Who were they?
Jack: The worst possible creatures you can imagine. I persuaded him to join up. I said it would be an adventure. He hadn't lived.
Original Jack: Have any of us?
Jack: (about Captain Harkness) Tomorrow’s their last training exercise. Just another day. They go out on a sortie and are surprised by two formations of Messerschmitts. He destroys three of the enemy. His men listen to his whoops of joy over the radio. Then it all goes quiet. He can’t bail out because his whole plane is on fire. But his men all make it back to safety.
Owen: Good job you're a crap shot.
Ianto: I was aiming for your shoulder.
Episode Goofs
While in 1941, Tosh writes an equation in her own blood. In reality, the blood would have turned from red to brown yet when the rest of the team find it, it is still red.