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).
Movies
Frankenstein
Otto Roget
Surf Ninjas
Mac
Impulse
Bob Russell
Trilogy of Terror
Thomas Amman
Daughters of Darkness
Stefan Chilton
Pennies from Heaven
The Detective
Racing with the Moon
Mr. Nash
Killer's Delight
Danny
House of Dark Shadows
Willie Loomis
Night of Dark Shadows
Alex Jenkins
Perry Mason: The Case of the Glass Coffin
Jake Morrison
Calendar Girl, Cop, Killer? The Bambi Bembenek Story
John Garner
The Return of Mickey Spillane's Mike Hammer
Chapel
A Small Town in Texas
Lenny
The Cover Girl and the Cop
Lieutenant Wingo
Cagney & Lacey: The View Through the Glass Ceiling
Harvey Lacey
Welcome Home, Bobby
Geffin
Native Son
Max
Melvin Purvis G-Man
'Tony' Anthony Redecci
The Invasion of Carol Enders
David Hastings
Rosie: The Rosemary Clooney Story
Uncle George
Hostage Flight
DiSalvo
The Kansas City Massacre
Sam Cowley
Nightmare on the 13th Floor
Sgt. Madden
The Picture of Dorian Gray
Alan Campbell
Daddy
Mike Burnette
Express to Terror
Quinn
The Return of Mod Squad
Marty
The Cloning of Clifford Swimmer
The Long Days of Summer
Duane Haley
The Last Ride of the Dalton Gang
Charlie Powers
Roseanne: An Unauthorized Biography
Jerry Barr
Police Story: Burnout
Capt. Harrison
Master of Dark Shadows
Self
Babycakes
Al
Without Warning: Terror in the Towers
Jack McAllister
Cagney & Lacey: The Return
Harvey Lacey
Cagney & Lacey: Together Again
Harvey Lacey
Cagney & Lacey: True Convictions
Harvey Lacey
Colorado C.I.
Kessler
Shirts/Skins
Herbie Bush
Delancey Street: The Crisis Within
Richard Copell
Nightmare at 43 Hillcrest
American Dream
Coach Ritter
MacShayne: Winner Takes All
Waldo Church
Night of Terror
Manning
Downpayment on Murder
Albert
Date Rape
Joe Farrell
Shows
The Streets of San Francisco
Dark Shadows
Willie Loomis
Charlie's Angels
Leonard Chaffey
Kojak
Pinky
Hill Street Blues
Vega$
Police Story
The Detectives
The Gallant Men
Lou Grant
Murder, She Wrote
Lt. Martin McGinn
Trapper John, M.D.
Starsky & Hutch
Fame
All in the Family
Leo
227
Quincy, M.E.
Hawaii Five-O
Harris
Mannix
The Hardy Boys / Nancy Drew Mysteries
Kaz
Naked City
Chuck
Hallmark Hall of Fame
Ned
The Waltons
Weekend Special
Snoops
Lieutenant Sam Akers
Sword of Justice
The Sixth Sense
ABC Afterschool Special
Joe Farrell
Joe Forrester
In a Child's Name
Joe Silvano
The Rockford Files
Leo
Cagney & Lacey
Harvey Lacey
Mad About You
Gus Stemple
Murder, She Wrote
Patrick MacNair
Murder, She Wrote
Superintendent Arthur Joyce
American Playhouse
Reverend Walker
Kojak
Hicks
Finder of Lost Loves
Arthur Barwell
The Magician
Jim Russell
Stoney Burke
Mickey
Barnaby Jones
Johnny Alban
The Mod Squad
Johnny Wexford
Hunter
Power plant worker