HallmarkDB
Actor

Donald Sage Mackay

Donald Sage Mackay played Dr. Stanley Williams in Mystery Island: House Rules (2025), his one Hallmark credit so far.

Open Mystery Island: House Rules

Donald's Hallmark film

Beyond Hallmark

  • Red, White & Royal Blue2023, Film, as Jeffrey Richards
  • Tom Clancy's Jack Ryan2018, TV series, as CJCS Jeff Maguire
  • Elementary2012, TV series, as Ben
  • Modern Family2009, TV series, as George
  • Mad Men2007, TV series, as Dr. Gosman
  • House2004, TV series, as Neil

Questions people ask

How many Hallmark movies has Donald Sage Mackay been in?

We have 1 Hallmark movie on file for Donald Sage Mackay.

What is Donald Sage Mackay's most popular Hallmark movie?

Mystery Island: House Rules (2025) has more audience votes than any other Donald Sage Mackay Hallmark film, so it's the one most people have seen.

What was Donald Sage Mackay's first Hallmark movie?

The earliest Hallmark film in our catalogue for Donald Sage Mackay is Mystery Island: House Rules (2025).

What does Donald Sage Mackay do in Hallmark movies?

Donald Sage Mackay works on Hallmark films as actor.

Credits come from IMDb, posters and other credits from TMDB, and ratings combine IMDb and TMDB audience scores. Weirdness and traits are HallmarkDB’s own, read from each film’s subtitles. Donald Sage Mackay on IMDb · Donald Sage Mackay on TMDB