"Living Nightmare"

The crew was sent to chart the Sybillan Expanse, a previously unexplored area. While there they encountered powerful psionic entities who, in order to drive the Phoenix out, attacked their minds and forced the crew to mentally live through their worst fears. It was later discovered that the Admiral who had sent them, Soren, was well aware of what lay in wait within the Expanse. He had sent the Phoenix in order to safeguard his own preferred crews, and later resigned in shame once he was confronted.