[4] Schnetzer attended Catholic Memorial School[5] and The University of Massachusetts, earning a degree in French, with a minor in Spanish.
[6] In 1976, he played Lucentio in a TV movie production of The Taming of the Shrew and guest-starred on Hawaii Five-O (credited for both roles as Stephen St.
[3] Schnetzer joined the cast of the ABC soap opera One Life to Live, playing Marcello Salta from 1980 to 1982.
[9][1] Schnetzer returned to Broadway in 1981, playing Mark Harrison in A Talent For Murder at the Biltmore Theater.
[3] Schnetzer returned to Another World in 1987, continuing to play Cass until the show's final episodes aired in June 1999.
[16] Schnetzer returned to Broadway in 2002, replacing Bill Pullman in the role of Ross in Edward Albee's The Goat, or Who is Sylvia?
[22] From 2008 to 2013, he had guest-starring roles on The Wire, Fringe, Damages, The Good Wife, Law & Order: Criminal Intent, and Person of Interest.
[15] From May to June 2009, Schnetzer played Voltaire in Legacy of Light at Arena Stage in Crystal City, Virginia.
[23] He returned to the same venue in September 2009, appearing in The Quality of Life, co-starring with Annette O'Toole and Kevin O'Rourke.
[4] Schnetzer became a prolific voiceover talent in English and French, advertising for many companies, such as Kellogg's Frosted Flakes.
[4] He continued to land guest-starring roles, appearing from 2014 to 2018 on Forever, The Blacklist, Flesh and Bone, Blue Bloods, Billions, and Elementary.