Kirill's biggest problem these days is that he's not getting any closer to his partner. Then he, Doug, and Kay are sent on a new undercover mission.
Next time on Double Decker
 Episode 4: "Derick Returns!"
،"في الحلقة القادمة من "دوبل دكّر
"!الحلقة 4: "عودة ديريك
Nächstes Mal bei Double Decker Episode 4:
Próximo Double Decker,
episodio 4: "¡El regreso de Derick!".
Próximo Double Decker,
episodio 4: "¡El regreso de Derick!".
À suivre dans Double Decker :
Le retour de Derick !
Double Decker Episodio 4: "Il ritorno di Derick!"
A seguir, em Double Decker, 4º episódio:
O retorno de Derick!
«Напарники». Серия 4: 
«Дерик возвращается!»