Gridlock
Doctor Who: Season 3, Episode 3
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The Doctor takes Martha to New Earth, in the far future, only to find that an entire city has become a deadly trap.
Show: Doctor Who
Air date: April 14, 2007
Writer: Russell T Davies
Executive producer(s): Russell T Davies; Julie Gardner
First broadcast: 14 April 2007
Music by: Murray Gold
Production code: 3.3