TARDIS functionality failure requiring urgent repair under dangerous conditions and temporal constraints

Tegan and Turlough frantically inspect the TARDIS interior door after landing on Frontios, only to find it inexplicably locked. Its seamless surface lacks visible hinges, defying normal entry procedures. Turlough …

The Doctor orders an immediate retreat from Frontios as the colony faces relentless assault. His demand for swift departure unsettles Tegan and Turlough, who sense his urgency but cannot decipher …