TV roles
Best TV shows featuring John Heffernan
Every John Heffernan series we track, ranked by real viewer rating — led by Law & Order at 7.3. Where to stream each is one tap away.
John Heffernan's shows, ranked 2
Law & Order (1990)as Marvin Warner
Mary Hartman, Mary Hartman (1976)as Chester Markham
Good to know
What is John Heffernan's best TV show?
Law & Order (1990) is John Heffernan's highest-rated series here, at ★ 7.3.
How many TV shows has John Heffernan been in?
We track 2 John Heffernan shows, averaging ★ 7.3 — ranked here by viewer rating.
Where can I watch John's shows?
Each series links to its page with live streaming availability for your country.