Spearhead in Hong Kong - Stafford Gordon (1981) - Pak Nai, Yuen Long

In the second of only two locations from the fourth episode, The Macau Connection, (the first location being Lau Fau Shan) Sgt. Bilinski is kidnapped by the snakeheads because he won't overlook his soldierly duties and a big search is undertaken by the army and local police force. He turns up later in the episode unconscious and on a beach somewhere. Actually, the beach location is not that far away - it's just down the coast in Pak Nai - still within the boundaries of Yuen Long District though, despite its proximity to Tuen Mun.