
Acting
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.
Do Over
as Lou

Dolphin Tale 2
as Dennis
Shuffle
as Big boss

Bandidas
as Ashe

Behind Enemy Lines II: Axis of Evil
as CIA Director Weylon Armitage

Sniper 3
as William Avery

Last Best Chance
as Nathan Sheldon

Anacondas: The Hunt for the Blood Orchid
as CEO

S.W.A.T.
as Sgt. Howard

Undisputed
as Warden Lipscom

The Good Fight
as Ron · 1 ep.

How to Get Away with Murder
as Justice Strickland · 1 ep.

Past Life
as Henry · 1 ep.

Grey's Anatomy
as Colonel Daniel Robbins · 1 ep.

Supernatural
as Father Reynolds · 1 ep.

Boston Legal
as A.D.A. Joshua Wendt · 1 ep.

24
as Don Ashton · 1 ep.

CSI: Crime Scene Investigation
as Larry Maddox · 1 ep.

The District
as Owen Mitchell · 1 ep.

Boston Public
as A.D.A. Roland Hill · 1 ep.
Dolphin Tale 2
2014