Lock Up is based on the case files of real life attorney Herbert L. Maris as he investigates crimes to clear the innocent. This time, a flight attendant is accused of murdering her roommate and its up to Maris (Macdonald Carey) to find out what really happened. Season 2, Episode 4: October 15, 1960
You can stream Lock Up: Flying High free and legally on OldReel, via the Internet Archive.
Yes — it is in the public domain and can be watched and shared freely.