Neil Patrick Harris
— Brian Hannigan
Johnny Galecki
— Daniel Hannigan
Linda Kelsey
— Maureen Hannigan
John M. Jackson
— Joe Hannigan
Lisa Banes
— Barbara Forester
James Handy
— Det. Stockman
Tim Kelleher
— Det. Cahill
Timothy Bass
— Ken Pierson
Eric Lloyd
— Chris Hannigan
Gregory Harrison
— Tom Kelley
Larry Black
— D.A. Norman Crowley
Rhoda Griffis
— Liz Kelley
Kathy Larson
— Lisa Kensington (as Catherine Larson)