Pistorius is facing life in prison if convicted of murdering Reeva Steenkamp, 29.
Pistorius shot Steenkamp while she was inside his bedroom washroom. He says he fired the shots in self-defence, believing there was an intruder in his home.
The defence starts its case on Monday.
Over the first four weeks of the trial, the prosecution made its case against the former Olympic and Paralympic runner. The Pretoria court heard testimony from neighbours and experts, sometimes hearing graphic details of the injuries Steenkamp suffered.
Judge Thokozile Masipa is presiding over the case. She will decide Pistorius's fate as South Africa does not have trials by jury.- ANALYSIS | Oscar Pistorius trial will put his life under the microscope
- DIAGRAM | State vs. Pistorius: How the accounts differ