- as Dr. Daniel Pierce
- as Paul Haley
- as Kate Moretti
- as Agent Rudy Fleckner
- as Max Lewicki
- as Susan Vetter
- as Natalie Vincent/Dr. Caroline Newsome
- as Tess Williams
- as Sario Donati
- as Donnie Ryan
- as Dr. Arthur Singh
- as Dr. Randall Vetter
- as Dr. Jeff Bowen
- as Eva
- as Ian Vetter
- as Gabby
- as Jill Nelson
- as Mel Haberman
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