Deborah Tennant

Cast Credits

IT: Welcome to Derry (2025)

Guest starring as Miss Douglas

Episode 1x02: The Thing in the Dark (Nov 2, 2025) [Co-Star]

Saint-Pierre (2025)

Guest starring as Doris Montgomery

Episode 2x11: Cerulean Blue (Apr 6, 2026) [Co-Star]

Ruby and the Well (2022)

Guest starring as Eleanor Pritchard (3 episodes)

Episode 2x10: I Wish the Well Would Let Us Be (Nov 20, 2022)
Episode 1x10: I Wish We'd Stayed Friends (Apr 24, 2022)
Episode 1x06: I Wish I Could Stop Pretending (Mar 27, 2022)

Reacher (2022)

Guest starring as Professor Bryant's Assistant

Episode 1x06: Papier (Feb 4, 2022) [Co-Star]

Decoys (2020)

Guest starring as Mary Jane's Mom

Episode 1x04: Vermiculation (Jul 17, 2020)

In the Dark (2019)

Guest starring as Nancy

Episode 2x01: All About the Benjamin (Apr 16, 2020) [Co-Star]

Crawford (2018)

Guest starring as Mrs. Langille

Episode 1x03: Manny's Oath of Secrecy (Feb 2, 2018)

Private Eyes (2016)

Guest starring as Principal Ann Frame (2 episodes)

Episode 2x03: The Frame Job (Jun 8, 2017)
Episode 1x01: The Code (May 26, 2016) [Co-Star]

Schitt's Creek (2015)

Starring as Marcy Brewer (2 episodes)

Episode 6x14: Happy Ending (Apr 7, 2020)
Episode 5x11: Meet the Parents (Mar 19, 2019)

Reign (2013)

Guest starring as Smiling Villager

Episode 1x10: Sacrifice (Jan 30, 2014) [Co-Star]

Copper (2012)

Guest starring as Sister Agnes Clare

Episode 1x02: Husbands and Fathers (Aug 26, 2012) [Co-Star]

InSecurity (2011)

Guest starring as Bev

Episode 1x11: Going Dutch (Mar 15, 2011)

Haven (2010)

Guest starring as Roslyn Toomey

Episode 3x01: 301 (Sep 21, 2012) [Co-Star]

Being Erica (2009)

Guest starring as Dahlia

Episode 3x07: Jenny From the Block (Nov 3, 2010)

Jake 2.0 (2003)

Guest starring as Female Technician

Episode 1x01: The Tech (Sep 10, 2003) [Co-Star]

Degrassi (2001)

Guest starring as Housing Coordinater

Episode 6x02: Here Comes Your Man: Part 2 (Sep 29, 2006)

Due South (1994)

Guest starring as Daphne Kelly

Episode 2x06: The Mask (Jan 19, 1996)

Friday the 13th: The Series (1987)

Guest starring as Eleanor

Episode 1x21: Double Exposure (May 21, 1988) [Co-Star]