The first season ends with Jessica convicted of the murder of Peter Campbell. The announcer concludes the season by announcing that Jessica is innocent, and that one of five characters -- Burt, Chester, Jodie, Benson, or Corinne -- killed Peter Campbell. Chester later confesses to Peter's murder and is sent to prison. He is soon released after a successful temporary insanity defense.

Who killed peter on the tv show soap? OK. Let's think. My stream of consciousness:
The relevant information to answer the above question is: Chester later confesses to Peter's murder and is sent to prison. The answer is Chester.