Complex sentence: It was created by Eric Kripke and produced by J.J. Abrams' Bad Robot Productions for the NBC network, debuting on September 17,2012, and originally airing on Mondays at 10:00pm (ET).
Split into simpler sentences: It was created by Eric Kripke and produced by J.J. Abrams' Bad Robot Productions for the NBC network. It debuted on September 17,2012, and originally aired on Mondays at 10:00pm (ET).