Complex sentence: Carly begins to believe A. J. is alive after seeing him briefly on the docks, and when she goes to ask Monica about A.J. at her house, she catches A. J. and Michael together.
Split into simpler sentences: Carly begins to believe A. J. is alive after seeing him briefly on the docks. When she goes to ask Monica about A. J., she catches A. J. and Michael together.