The trial of Oscar Pistorius, accused of killing his former girlfriend Reeva Steenkamp, was postponed until April 7 because one of two assessors was hospitalized. 

The assessors will help the judge decide the verdict. South Africa does not have jury trials. 

Pistorius killed Steenkamp on Valentine's Day last year. Of that, there is no doubt. 

But was it murder? 

One of South Africa's toughest prosecutors, Gerrie Nel, has been fighting for most of this month to prove it was. 

On Friday, one of the country's shrewdest defense lawyers, Barry Roux, was scheduled to begin convincing a judge that it wasn't. 

Now he will have to wait. 

The verdict will hinge on two questions: 

Did the Olympic sprinter know his girlfriend was behind the door in the bathroom of his house when he fired four hollow-point bullets through it in the middle of the night? 

And if he did not -- if he thought she was a burglar, as he insists -- did he act as a reasonable person would have? 

Critical testimony will come from the only living person who was in the house at the time, the "Blade Runner" himself. 

Pistorius was expected to take the stand for the first time Friday to give his side of a story he's been telling for more than a year. 

He woke up in the middle of the night, went to his balcony to bring in a fan -- or two fans, in his most recent version -- heard his bathroom window opening, took his gun, went to the bathroom and fired through the door when he heard a noise in the toilet. 
Who doesn't use a jury?
What do they use instead?
How many?
Who do they assist?
with what?
Who is on trial?
For what?
Who was that?
When did he do it?
What day?
South Africa
South Africa does not have jury trials
assessors
The assessors will help the judge decide the verdict
two
two assessors
the judge
The assessors will help the judge decide the verdict
the verdict
The assessors will help the judge decide the verdict
Oscar Pistorius
The trial of Oscar Pistorius
killing his girlfriend
The trial of Oscar Pistorius, accused of killing his former girlfriend Reeva Steenkamp
Reeva Steenkamp
his former girlfriend Reeva Steenkamp
last year
Pistorius killed Steenkamp on Valentine's Day last year
Valentine's Day
Pistorius killed Steenkamp on Valentine's Day last year