H2O

Thomas David McLaughlin

Sgt. Leah Collins

Marc Lavigne

Julia McLaughlin

Don Pritchard / Lt. Daniel Holt

U.S. Ambassador Conrad

Sally

Grand Chief Katie Blackfire

Willy

Clark

Cam Ritchie

Marie Lavigne

U.S. President Monroe

Police Chief

Deever

Doug McKay

Nate Morgan

Deirdre Milnes

Christy Berger

Jim, McLaughlin's aide

McLaughlin's aide

Det. Michel Duguay

Québec Premier Marcel Coté

Michael Cameron