Shakespeare's classic play explores the eternal themes of love and hate, mercy and justice, with parallel stories centred on the moneylender, Shylock, and the lovers, Portia and Bassanio. Shylock's angry insistence on the repayment of his debt from Bassanio ends in the Venetian courts where he demands his 'pound of flesh'. Portia meanwhile, a wealthy young Venetian woman, must marry one of her many suitors. Her late father's will has set the challenge by means of three caskets, one gold, one silver and one lead. The climax of the play takes place in court, with Portia, now disguised as a man and defending the life of Antonio, imploring Shylock to show mercy.