The Doctor, Peri, Yrcanos and his men plan an attack on Sil, but the Doctor betrays by abandoning them at the last minute and warns the Mentors, causing Peri and Yrcanos to flee in different directions. Peri happens across one of the Mentors' servant woman, and with her help, disguises herself to get close to the Doctor. The Doctor reveals Peri to the Mentors and requests he be allowed to interrogate her alone, a request Sil allows. Away from the others, the Doctor tells Peri his betrayal was all a ploy to learn more of Sil's plan, and has discovered that they will transplant Kiv's mind into his body if he does not cooperate.