The Enterprise Incident: (Episode 59)

Kirk appears to be suffering from a nervous breakdown and orders the U.S.S. Enterprise into forbidden Romulan territory. Suddenly the U.S.S. Enterprise is surrounded by three Romulan ships demanding Kirk's surrender!



And The Children Shall Lead: (Episode 60)

On Triacus, Kirk and his crew learn that all the adults of an expedition there have committed suicide, yet their children are completely unmoved by their parents' deaths. Kirk senses "something evil" but cannot identify the source.