Stephen Macht will appear in an episode of the third season of Suits alongside his son Gabriel who plays Harvey Specter.
The 71 year old is a film and television actor having starred in Knots Landing, Star Trek: Deep Space Nine, General Hospital and Cagney & Lacey.
Gabriel Macht has tweeted a number of photographs on set with his dad saying its "awesome" to have him there.
Catch Suits on RTÉ Two Tuesdays at 9pm.
Hanging with my dad on set is pretty awesome! pic.twitter.com/3J14Oy6MO4— Gabriel Macht (@GabrielMacht) September 19, 2013