Ali: Still the Greatest, 9pm, ITV4
In the last edition of the series, Des Lynam and Barry Mcguigan look at the closing stages of Muhammad Ali's professional boxing career, which saw him face the imposing Ken Norton before losing and then regaining the World Heavyweight title against
the unfancied Leon Spinks. Casualty (BBC1, 8.40pm) Linda's sister turns up in the ED accompanied by her teenage daughter and young son, on the run from social services. The nurse agrees to assist her, but soon regrets the decision. Meanwhile, Lloyd's determination to help a patient suffering from memory loss inadvertently places her in danger.