
Acting
John Karlen (born John Adam Karlewicz) was an American character actor who played multiple roles (Willie Loomis, Carl Collins, William H. Loomis, Desmond Collins, Alex Jenkins, and Kendrick Young) on the ABC serial Dark Shadows, in various episodes which aired from 1966 to 1971. Karlen also played Harvey Lacey, husband of Mary Beth Lacey (played by Tyne Daly), on the CBS crime series Cagney & Lacey (1982–88).

Master of Dark Shadows
as Self

Cagney & Lacey: True Convictions
as Harvey Lacey

Cagney & Lacey: Together Again
as Harvey Lacey

Cagney & Lacey: The View Through the Glass Ceiling
as Harvey Lacey

Cagney & Lacey: The Return
as Harvey Lacey

MacShayne: Winner Takes All
as Waldo Church

Roseanne: An Unauthorized Biography
as Jerry Barr

Surf Ninjas
as Mac

Without Warning: Terror in the Towers
as Jack McAllister

The Dark Wind
as Jake West

Mad About You
as Gus Stemple · 3 ep.

In a Child's Name
as Joe Silvano · 2 ep.

Snoops
as Sam Akers · 13 ep.
Police Story
as Capt. Harrison · 1 ep.

227
1 ep.

Murder, She Wrote
as Superintendent Arthur Joyce · 2 ep.

Finder of Lost Loves
as Arthur Barwell · 1 ep.

Fame
1 ep.

Cagney & Lacey
as Harvey Lacey · 125 ep.

American Playhouse
as Reverend Walker · 1 ep.
Cagney & Lacey
1982