Liar!

The positronic brain of robot RB-34 (Herbie) has an unforeseen 'extra': he can read human thoughts. So his take on the First Law of Robotics is unorthodox: he tells human beings only what he believes will not hurt their feelings. Can renowned robopsychologist Dr. Susan Calvin 'fix' RB-34? Or are there areas of her own psyche where she would rather not hear the truth?

• Gerald BlakeDirector

• Paul ChapmanMilton Ashe
• Ian OgilvyHerbie, RB34
• Hamilton DyceDr. Lanning
• Wendy GiffordDr. Susan Calvin
• Gerald SimDr. Bogert
• Robert JamesKelvin Brooke
• Edwin RichfieldJamieson
• Roy HanlonHargreaves
• Jenny RussellMary Curl
• Anna PerryBrooke's Secretary
• Rita DaviesReceptionist
• Jumoke DebayoCleaner