Threshold

Celebrated heart surgeon Thomas Vrain supports the research of an offbeat scientist who has invented an artificial heart. Against the advice of the Ethics Committee, Dr. Vrain decides to perform the first artificial heart transplant.

• James SalterWriter
• Richard PearceDirector
• Micky ErbeOriginal Music Composer
• Maribeth SolomonOriginal Music Composer

• Donald SutherlandDr. Thomas Vrain
• John MarleyEdgar Fine
• Sharon AckerTilla Vrain
• Mare WinninghamCarol Severance
• Jeff GoldblumDr. Aldo Gehring
• Michael LernerHenry De Vici
• Richard BlackburnDr. Cutter
• Michael C. GwynneJay Wingate
• Robert JoyDavid Art
• Allan F. NichollsDr. Basil Rents
• Kate TrotterMrs. Anderson
• Lally CadeauAnita, Vrain's Secretary