[s1e11] Boom Town -

: The TARDIS "judges" the Slitheen. When she looks into the heart of the TARDIS (the Time Vortex), it reverts her to an egg, giving her a chance for a fresh start at life.

: The core of the story is a "last meal" scene between the Doctor and Margaret. She pleads for her life, arguing that sending her back to her home planet is a death sentence because her family is in disgrace. This forces the Doctor to confront his role as a "judge, jury, and executioner." [S1E11] Boom Town

Watch a reaction to the iconic Ninth Doctor episode, including thoughts on the Slitheen's return and the ongoing Bad Wolf mystery: : The TARDIS "judges" the Slitheen