Don Johnson does not appear at all in this episode, his absence explained by his being in Pompano testifying. This would be the only episode he would miss during the entire series run (although a handful of others feature Crockett only briefly).
Vern Gillum works hard to make this rather pedestrian story more interesting, using some extraordinarily abstract shots - such as the shadow of the plant in Castillo's house - as well as many jump cuts synchronized to the music to give the episode added flair.
This marks the second episode that shows Castillo's access to the CIA and their personnel.
Among other things, Reese's CIA file shows that he is acquainted with Noriega and was involved in "Irangate".
One of the code words Castillo uses to access the CIA computer files is "FREEFALL", which would later be the title of the series finale.