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This is Season 5, Episode 07, which comes after the last
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In this episode, a new videotape in the plan demands technology that William Bell kept hidden from the team. Happy to see her old friends, Nina Sharp helps retrieve the crucial elements. Meanwhile, Peter works an independent angle against the Observers and scores a minor victory.
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Walter discusses how he trusted Bell before Bell betrayed them to gain favor with the Observers.
Observers are featured in this episode.
Timestamp: 26:06
The bell-shaped lamp in the pocket universe in 'Through the Looking-Glass and What Walter Found There' foreshadows the team gaining access to William Bell's storage facility in 'Five-Twenty-Ten'.
Timestamp: 32:12
Timestamp: 30:10
Timestamp: 42:32
The combination to access Bell's safe in "Five-Twenty-Ten" was 0-5-2-0-1-0, the same combination Walter used to access the daycare center.
S5E07
Timestamp: 32:54
S3E03
Timestamp: 33:08
S5E07
Timestamp: 01:50
S3E12
Timestamp: 01:51
Olivia gave Nina a hug and a kiss in "Five-Twenty-Ten", suggesting that they reformed a personal relationship.
S4E19
Timestamp: 41:08
S5E07
Timestamp: 29:30
S5E07
Timestamp: 24:37