Alexander at the summit of his ambition.--Sad changes.--Alexander becomes dissipated.--His officers became estranged.--Character of Parmenio.--His services to Alexander.--Parmenio's son, Philotas.--His dissolute character.--Conspiracies.--Plot of Dymnus.--Dymnus destroys himself.--Philotas suspected.--The council of officers.--Philotas accused.--Arrest of Philotas.--The body of Dymnus.--Alexander's address to the army.--Philotas brought to trial.--Defense of Philotas.--He is put to the torture.--Confession of Philotas.--He is stoned to death.--Parmenio condemned to death.--Mission of Polydamas.--Precautions.--Brutal murder of Parmenio.--Story of Clitus.--He saves Alexander's life.--Services of Clitus.--Occurrences at the banquet.--Clitus reproaches Alexander.--Alexander's rage.--Alexander assassinates Clitus.--His remorse.