Denis Leroy Arndt (February 23, 1939 – March 25, 2025) was an American actor, best known for his starring role as Alex Priest in the play Heisenberg for which he earned a 2017 Tony Award nomination for Best Actor in a Play.
Columbo
Series • 1971
Supernatural
Series • 2005
Grey's Anatomy
CSI: Crime Scene Investigation
Series • 2000
Ally McBeal
Series • 1997
24
Series • 2001
JAG
Series • 1995
Chicago Hope
Series • 1994
The Practice
Boston Legal
Series • 2004
How to Get Away with Murder
Series • 2014
Murder, She Wrote
Series • 1984
The Good Fight
Series • 2017
L.A. Law
Series • 1986
The Wonder Years
Series • 1988
Touched by an Angel
Lois & Clark: The New Adventures of Superman
Series • 1993
The Pretender
Series • 1996
Boston Public
The District
seaQuest DSV
Wiseguy
Series • 1987
Picket Fences
Series • 1992
Crime Story
Life Goes On
Series • 1989
Family Law
Series • 1999
Basic Instinct
Movie • 1992
Herman's Head
Series • 1991
The Wonderful World of Disney
Series • 1954
Get Real