Complex sentence: Liddy remained in the public eye with two guest appearances on the television series "Miami Vice" as William "Captain Real Estate" Maynard, a shadowy former covert operations officer whom Sonny Crockett knew from his military service in South Vietnam.
Split into simpler sentences: Liddy remained in the public eye with two guest appearances on the television series "Miami Vice" as William "Captain Real Estate" Maynard. Who was a shadowy former covert operations officer that Sonny Crocket knew from his military service in South Vietnam.