Guest Stars Jeff Perry as Thatcher Grey Rachael Taylor as Dr. Lucy Fields Alexa Havins Bruening as Danielle Co Starring John O'Brien as Lab Tech Jeffrey Shelli Boone as Paula Glass Ken Takemoto as Trial Patient #1 Desean Terry as Colin Cooke Cici Lau as Trial Partner #1 Duane R. Shepard, Sr. as Trial Patient #5 Noah Schuffman as Randy Roberta Bassin as Trial Patient #4 Edythe Davis as Trial Partner #4 Steven Anders as Trial Partner #3 Aixa Clemente as Trial Partner #2 Karen Tarleton as Trial Patient #2 Patricia Forte as Mrs. Glass Cathrine Grace as Trial Patient #6 Tracey Aileen Leigh as Sarah Cooke Darius Dudley as Trial Patient #3 Michael Esparza as Marcus
