History Recap / DoctorWhoS38E6Praxeus

* HumanAliens: Suki belongs to an unnamed alien race that came to Earth to develop a cure for Praxeus. The Doctor, a Human Alien herself, doesn't realise this until she is tipped off.

* ContinuityNod: When the Doctor discovers that plastics are closely linked to the threat of Praxeus, her first thought is to suspect Auton involvement, but she quickly dismisses that because the Autons are bacterial in nature.

* {{Understatement}}: Aramu's response to the TARDIS materialising in front of him is "Suki, this is not an ordinary day".

* TheVirus: Praxeus is a pathogen with the ability to hijack the bodies of other lifeforms, and, according to Suki, is aware of any attempt to cure it and can use its hosts to sabotage the cure.

* CreepyCrows: Murders of crows are seen at the river bank in Peru and the lab in Madagascar, and the Doctor theorises that they're spying on her and the fam. It turns out they're experiencing advance Praxeus infection.

* CreepyCrows: Murders of crows are seen at the river bank in Peru and the lab in Madagascar, and the Doctor theorises that they're spying on her and the fam.
* FantasticAesop: If humans don't clean up plastic in the oceans, they'll leave themselves vulnerable to attacks from plastic-loving alien bacteria.
* GreenAesop: Gabriela takes Jamila to a river in Peru which she describes as the most beautiful river in the world, and finds its banks strewn with trash since the 3 years she was last there. Plastic pollution tuns out to be central to the threat posed by Praxeus, and there are a few rants against humans introducing plastic into the food-chain.
* InMediasRes: According to the episode's writer himself, it starts with the Doctor and her companions already split up across the globe as part of their investigation. The previous episode ended with them getting the three distress calls.

* FantasticAesop: If humans don't clean up plastic in the oceans, they'll leave themselves vulnerable to attacks from crows controlled by alien bacteria.
* GreenAesop: Gabriela takes Jamila to a river in Peru which she describes as the most beautiful river in the world, and finds its banks strewn with trash since the 3 years she was last there. The Doctor also rants against humans introducing plastic into the food-chain.

* GreenAesop: Gabriela takes Jamila to a river in Peru which she describes as the most beautiful river in the world, and finds its banks strewn with trash since the 3 years she was last there. The Doctor also rants against humans introducing plastic into the food-chain at one point.

* GreenAesop: Gabriela takes Jamila to a river in Peru which she describes as the most beautiful river in the world, and finds its banks strewn with trash since the 3 years she was last there. The Docotr also rants against humans introducing plastic into the food-chain at one point.

* GreenAesop: Gabriela takes Jamila to a river in Peru which she describes as the most beautiful river in the world, and finds its banks strewn with trash since the 3 years she was last there.

* NoodleIncident: The Doctor mentions a talking cat in Ontario that she's ruled out as unconnected to the events of the episode.

* GreenAesop: Gabriela takes Jamila to a river in Peru which she describes as the most beautiful river in Peru, and finds its banks strewn with trash since the 3 years she was last there.

* NoodleIncident: The Docotr mentions a talking cat in Ontario that she's ruled out as unconnected to the events of the episode.

* InMediasRes: According to the episode's writer himself, it starts with the Doctor and her companions already split up across the globe as part of their investigation.

Written by Pete [=McTighe=].

''Across Peru, Madagascar and Hong Kong, the Doctor and friends face a deadly global threat.\\

''The Doctor and her friends split up to investigate multiple mysteries across planet Earth. What they find will threaten all of humanity…''