If Palpatine killed Darth Plagueis in battle, there was a risk his master's spirit would try to possess him. Palpatine did not kill Plagueis in battle, demonstrating his own vast power ...
Palpatine killed his master, Darth Plagueis, in his sleep. Plagueis had doggedly pursued the secret to immortality during his life, and it was this very ambition that blinded him to Palpatine's ...