Doctor Who season 4 episode 5 Recap and FAQ
Episode Summary
Martha Jones alerts the Doctor about global deaths linked to Atmos, a car device emitting toxic gas, part of a Sontaran plot led by General Staal. The Doctor collaborates with UNIT to counter the threat. Donna plays a key role aboard the Sontaran ship, uncovering that the gas is used for Sontaran cloning. The Doctor confronts General Staal, offering a chance to retreat. The Sontarans are ultimately defeated, Martha decides to stay on Earth, and the episode ends with the surprise appearance of the Doctor's daughter.
Full Episode S04E05 Recap
Frequently Asked Questions
Who is Martha Jones contacting at the beginning of the episode?
The Doctor.
What device is causing worldwide deaths?
Atmos.
Who are the antagonists orchestrating the Atmos incident?
The Sontarans, led by General Staal.
What does Martha Jones tell Colonel Mace?
To alert him about the Sontarans and advise caution.
Who is Ross?
A member of UNIT.
What is the global effect of the Atmos devices?
They are uncontrollable and affecting cars worldwide with poisonous gas.
What is the state of the Doctor's TARDIS during the episode?
It is on the Sontaran ship.
What long-standing war is mentioned?
The war between the Sontarans and the Rutans.
How does the Doctor plan to defeat the Sontarans?
By devising a strategy and using Donna's help from the Sontaran ship.
What is the Atmos gas discovered to be?
A clone-feed for Sontaran reproduction.
What choice does the Doctor give General Staal?
Leave Earth or face destruction.
What decision does Martha make at the end of the episode?
To stay on Earth.
Who unexpectedly appears at the end of the episode?
The Doctor's daughter.
What is the Doctor's reaction to the arrival of his daughter?
He is surprised.
What is the main conflict in this episode?
The Sontaran plot to use Earth for cloning using Atmos gas.