The Doctor and Peri’s escalating tension over competence, leadership, and autonomy during crisis, forcing Peri to challenge the Doctor’s judgment.

The Doctor’s latest attempt to fix the TARDIS stabilizes the chameleon circuit, a brief respite before the ship rattles violently. Peri’s pent-up frustration erupts as she catalogs the Doctor’s recent …

Peri confronts the Doctor’s resignation by producing a TARDIS manual, attempting to seek solutions for their dire situation on Varos. When she identifies a column’s movement in the TARDIS console, …

With the TARDIS dying in orbit, the Doctor deciphers dying power systems with Peri’s help and hatches a perilous plan. They must reach Varos—a prison planet orbiting in the past—to …