He had the starring role as Zachary Kane in the action film Bare Knuckles (1977).
In Starsky & Hutch he played 2 roles un both episodes: Vern Dubois in S1E20 Running and John Gallagher/Jack Cunningham in S3E10 The collector.
Viharo starred alongside Sherry Jackson as Zachary Kane in Bare Knuckles (1977), a film about a bounty hunter.
[4][5] His other films included Return to Macon County (1975), I Never Promised You a Rose Garden (1977), The Evil (1978), Hide in Plain Sight (1980),[6] Happy Birthday, Gemini (1980), and The Night Stalker (1987).
Viharo was married to actress Anne Helm in the early 1970s and divorced some time later.