- as Dr. Will Halstead
- as Jay Halstead
- as April Sexton
- as Maggie Lockwood
- as Dr. Sam Zanetti
- as Dr. Natalie Manning
- as Dr. Sarah Reese
- as Bill Simms
- as Dr. Connor Rhodes
- as Dr. Sam Abrams
- as Dr. Ethan Choi
- as Courtney Cole
- as Sharon Goodwin
- as Sylvie Brett
- as Dr. Daniel Charles
- as Jessica Chilton
- as Erin Lindsay
- as Chout
- as Field Reporter
- as Lucy Simms
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