Complex sentence: Chiller is an American cable and satellite television channel that is owned by NBCUniversal Cable Entertainment Group subsidiary of NBCUniversal, all owned by Comcast specializing in horror, thriller and suspense programming.
Split into simpler sentences: Chiller is an American cable and satellite television channel that is owned by NBCUniversal Cable Entertainment Group subsidiary of NBCUniversal, all owned by Comcast. The channel specializing in horror, thriller and suspense programming.