Insanity is contagious

Did anyone watch 60 minutes?
If not, you should, especially Annie.


I don't actually have the exact info here- it's amazing how unspecific and brief news articles are these days.
Two identical twins run across a British motorway is a seemingly simultaneous streak of insanity, doing more damage to vehicles than themselves. Two days earlier, they were having a normal family reunion in Ireland (was it?). They both have no family history of mental illness.

One sister was run over by a truck and severely injured. Amazingly, she recovered to full health in 3 months. The other, was hit unconscious only to be awake within a few minutes and running across the opposite lanes. It took people on each limb to carry her back to safety, all the while kicking and screaming, at moments stronger than all five people.

They both returned to normal within a day. The less injured of the two was found guilty and released- apparently even charming and sociable with police officers. She met a passerby who offered her a home while she waited for her sister's recovery. The friend of the kind passerby was suspicious as he got to know her, and within a few weeks found the body of his friend hammered the death.

She goes out again, self-harming with her hammer and attempting to kill herself by running into traffic. (hey, why do that if it didn't kill you the first time?) She suffered two broken legs and a fractured skull, only to be fully healed again, within three months.


How creepy!
Apparently experts have no idea what this 'mental illness' that was affecting the twins was.
It could be an extremely rare case of mental illness that is contagious to people very close to the affected, but that seems to be a long-term ilness unlike the twins' case. Or, separate but eerily simultaneous case of very brief uncontrollable insanity. Does it reveal more about how interconnected our minds actually are? Or maybe the more daring might even suggest that they're possessed?How the hell did they recover in such a short space of time, let alone get up and fight off five people after being unconscious.
What do you think?