Complex sentence: After surviving an attack from Mallon, Nick discovers that Gary had captured Annie and he refuses to let her go, but upon learning that Gary is actually Rhonda's ex-husband, Nick have the two reunited in order to rescue her.
Split into simpler sentences: After surviving an attack from Mallon, Nick discovers that Gary had captured Annie and he refuses to let her go. However, upon learning that Gary is actually Rhonda's ex-husband, Nick have the two reunited in order to rescue her.