While investigating an abandoned dance hall, Jack Harkness and Tosh find themselves having slipped through time and stuck in 1941, where the dance hall is being used for service personnel. Jack meets the real Captain Jack Harkness, the man whose identity Jack took after his death, which Jack learns will be the following day at a training exercise. Jack and Tosh recognise that they must find a way to open the Cardiff Rift from the present day in order to get back, and Tosh begins to work out ways of leaving the necessary equations to the rest of the Torchwood team. Jack manages to talk to Captain Harkness, and learns that the officer is attracted to him, though such demonstration in that setting and during those years, is socially unacceptable. The two talk more, Jack asking if the Captain would like to go elsewhere, but he refuses, acknowledging that Jack has obliquely told him that his remaining time on Earth is limited. In the present, the rest of the team come to realise Jack and Tosh are missing in time from photographs taken during the dance, and also determine that the Rift is the only way to bring them back, though Ianto believes it to be too dangerous. As they investigate the dance hall, they meet its proprietor, Bilis Manger. Unknown to them, Bilis is also present at the dance hall at 1941 and has attempted to alter and change the messages that Tosh is leaving for the Torchwood team. After finding the Rift key that Jack placed in a clock in Bilis' office and Tosh's equations, Owen is prepared to take the chance to open the Rift. Ianto holds him at gunpoint to try to stop it, but Owen refuses, and proceeds to open the Rift. As the dance in 1941 winds down, Captain Harkness invites Jack to dance with him, shocking the other partygoers. During the dance, the Rift opens. Jack says his goodbyes to the Captain, giving him a passionate kiss before he and Tosh step through the Rift. Bilis is also pulled through the rift. In the present, they are met by Gwen and return to Torchwood, where Jack and Tosh share a toast to the late Captain Jack Harkness.
Continuity
The World War II scenes of the episode take place on 20 January 1941, before Jack's first appearance in the Doctor Who episode "The Empty Child" set within 3 1/2 months later.
Jack refers to "flotsam and jetsam", a running theme throughout the series.
A fly-poster with the words "Vote Saxon" is seen on the exterior entrance to the dance hall. Mr Saxon is the arc word for Series Three of Doctor Who, and comes into play in the trilogy of episodes that begins with "Utopia". This episode aired prior to the broadcast of Series Three, making this the first appearance on screen of this poster, which appeared numerous times during Series Three of Doctor Who. The character of Mr. Saxon, however, predates this episode, having been previously referenced in the Doctor Who Christmas special, "The Runaway Bride", which aired a week before this episode, and before that in the Series Two episode "Love & Monsters".
One of the small bollards in the hall has graffiti of a circled P emblem. This was the emblem of the Preachers in the Doctor Who episodes "Rise of the Cybermen" and "The Age of Steel", and also appeared in "Ghost Machine" as graffiti on a bin.
When Owen is looking for the blueprints of the rift manipulator, the Ghost Machine and the Life Knife are shown.
The model of the plane on Jack's desk is a P-51 Mustang. It refers to the numerous mentions of Jack the pilot in photographs on the show as well as on the website, although the Mustang did not enter service until May 1942, after the events of this episode.
The password to Torchwood Jack's safe is Rhea Silvia who in Roman mythology was raped by the God of WarMars and was the mother of Romulus and Remus who founded the city of Rome. The password is used again by Gwen in "End of Days" to open the Rift.
Toshiko tells Jack that her grandfather was persecuted in London during the war. In "Greeks Bearing Gifts", one of her grandfathers is said to have worked at Bletchley Park during the war.
At least three, or as many as four Torchwood Jacks exist during the 1941 scenes. In addition to the Jack depicted with Toshiko, his younger self has been working for Torchwood Three for forty-two years. Their older self has been in a cadaver freezer in the hub for forty years. It is unclear whether their younger self has yet arrived, although it is prior to his usurpation of Group Captain Harkness' name and the events of "The Empty Child".
The device Owen uses to open the safe appears to be the same device that Toshiko uses to open the hub's locks in "Cyberwoman" and which Jack described as being able to open any lock within 45 seconds.
Owen claims to be second in command. Jack identified Suzie Costello as such in "Everything Changes" and hired Gwen to fill Suzie's vacancy. Gwen is exercising command when Jack returns from his travels with the Doctor and Martha Jones in "Kiss Kiss, Bang Bang".
Jack tells Toshiko "someone saved my life" after he had taken Harkness' identity, referring to the events of "The Parting of the Ways".
In the dance hall, as Toshiko and Jack are descending the steps, the graffiti on the wall behind them displays "Bad Wolf", a reference to the running theme in the first series of Doctor Who
Music
The songs "My Melancholy Baby", " The White Cliffs of Dover" and "A Nightingale Sang in Berkeley Square" are performed in this episode sung by Melissa Moore. The latter also featured in "The Empty Child", the Doctor Who episode which introduced Captain Jack Harkness. An instrumental version of "Take the A Train" is also played. In the Torchwood Series 1 DVD extras, John Barrowman sings the song "Anything Goes" with the band live on the set providing music, adding Torchwood-specific references.
Broadcast
This episode was first shown as a double-bill with "End of Days". The two episodes' end credits were merged and shown at the end of the second episode. They were first shown on the same day as the first broadcast of "Invasion of the Bane", the first episode of the Doctor Who spin-off The Sarah Jane Adventures. However, during repeats, they showed the 'next time' trailers. This did not happen on the first day of transmission.
