The Doctor has meanwhile rounded up the Mandrels using K9's dog whistle, having worked out they are pacified by ultrasonics. He leads them back into the projection and then slips out, leaving the creatures trapped. His next task is to reverse the CET transfer process to stop the smugglers getting away with the Vraxoin supply. After allowing Tryst and Dymond to transport the Eden projection to the Hecate, he activates the CET and traps them within a new projection – they are ready for the Customs Officers to walk in and arrest them. With the ships separated and the drug runners caught, the Doctor and friends slip away back to the TARDIS with the Eden project. They restore everything to their home planets and can only hope no one else discovers the secret of the Mandrels.
