Characters played by Jefferson Moore
Michael O'Neill
Characters played by Tom Luce
Brogan
Characters played by Kelly Worthington
Kate Sullivan
Characters played by Matt Wallace
Dr. Vincent
Characters played by Jon Huffman
Liam Sullivan
Characters played by Melissa Combs
Betty O'Neill
Characters played by Theo Edwards-Butler
Orla
Characters played by Caitlyn Waltermire
Holly
Characters played by Mollie Murk
Siobhan
Characters played by Bobbie Jo Douglass
Kate
Characters played by Destry Scott
Michael
Characters played by Kiersten Vorheis
Dr. Esposito
Characters played by Ciarra Allison
Brittany
Characters played by Rachael Yeager
Maeve
Characters played by Paul Kerr
William O'Neill
Characters played by Tessa McShane
Erin Sullivan
Characters played by Harli Cooper
Shauna