New developments in the Oscar Pistorius case shocked many around the globe after authorities revealed the athlete would be charged with premeditated murder in the shooting death of his girlfriend, Reeva Steenkamp.

Pistorius cried openly in a South African court today as he learned the news of the ramped-up charges. The prosecution says they can make the case that the man known as "Blade Runner" knew what he was doing when he shot Steenkamp four times at his home. Original reports, however, claimed Pistorius thought Steenkamp was an intruder and shot her out of self-defense and mistaken identity.

Former prosecutor Jonna Spilbor told Megyn Kelly on Friday's America Live that his original story is "pretty implausible," and that it's obvious from today's charges that the prosecution isn't buying it, either.

"Word on the street," as Kelly puts it, is that Pistorius shot her through a closed door, something that David Wohl, a defense attorney, said will be used by the runner's defense team to prove he truly did believe she was an intruder.

"In 2011, there were 7,000 home invasion robberies and a very high murder rate," Wohl said. He also reminded Kelly and Spilbor that Pistorius is disabled and has a different burden when it comes to how he is able or unable to defend himself.

"He's amputated below the knees. He's got guns to protect himself. He uses those guns, and it's critical he uses them quickly [...] to take care of what he perceives is a threat of great bodily injury or death." Wohl added that in light of the new information, "I think he's set up for a great defense."

All that being said, Wohl's last thought was one of caution. "I think you and Jonna are both right - there must be something more that we simply don't know about."