The Truth About Holly was the sixteenth episode of Airwolf, the fourth episode of the second season.
This episode is notable for being the one where Caitlin joins the Airwolf team permanently, although she doesn't get to know that it exists nor ride in it yet.
Also appearing for the first of several episodes is police Lieutenant Grodin. Everett, Santini's mechanic, who first appeared in Firestorm (episode) also puts in an appearance.
Unfortunately, the boyfriend hasn't given up on her yet and sends his goons in search of her. Caitlin O'Shaughnessy (Jean Bruce Scott) re-enters the picture, asking Dom for a job at his hangar. Meanwhile, while trying to assimilate to life in the U.S., Holly (Barbara Howard) begins hanging out on a movie set with String and Dom. Not all is quite as it appears when a serious of incidents lead String and Dom to confront Holly's ex-boyfriend and they make a disturbing discovery that could lead to Caitlin's death. 
- Taxquetl, Mexico - fictional location of Ed Aaron's villa
- Santini Air, Van Nuys
- Movie Set where Santini Air is doing a scene
- Hawke's cabin
- Restricted airspace north of Santa Barbara
- Bell 206 JetRanger - There's the regular Santini Air Jetranger. Then there's another one, N2282T seen in the Santini Air hangar. A third one, N20802 serial 3429 is Ed Aaron's helicopter.
- Bellanca 7ECA Citabria - N4212Y, seen in Santini Air hangar
- Hughes 500 - used by Caitlin during movie stunt. Probably the same chopper catches fire with Dominic inside later. Another one is delivered and ready for testing at the end.
- F-15 Eagle - two fighters are scrambled to intercept Caitlin's Jetranger, although Dominic calls them Tomcats (F-14).
- Lots of aircraft seen in the background at Van Nuys
- Micro Uzi - used by Hawke during the raid to rescue Holly in Mexico
- Smith and Wesson Model 36 - used by Holly
Guest stars/Recurring cast
- Barbara Howard as Holly Mathews
- Rick Jason as Ed Aarons
- Luke Askew as Tony
- David Ruprecht as Carlson (the movie director)
- Cliff Carnell as Hernando
- Wayne Heffley as Lieutenant Grodin
- Anthony Tyler Quinn as Everett (as Tony Quinn)
- Patrick Wright as Mancini
- Charles Howerton as Agent #2
- Robert Balderson as Agent #1
- Ron McPherson as Worker
- Frank Burt Avalon as Delivery boy
- Henry Carr as Gabriel
- Few of the guest characters have their names mentioned in the dialogue, making identification difficult. The biggest mystery is Henry Carr, as "Gabriel". Henry Carr has only one listing in IMDb (this episode), so it is almost impossible to get another picture of him to compare.