(NBCNC) - Imagine if you had an alternate personality that showed itself every night, that you had no control over.
That's the basis for a new drama premiering on NBC called "Do No Harm".
Neurosurgeon Jason Cole is forced to cope with is his volatile alternate personality, "Ian Price" who shows up every night at 8:25.
"As a doctor, he's only awake 12 hours a day. He's constantly, cleaning up Ian's mess, and trying to get through his day at the hospital," explains "Do No Harm" star Steve Pasquale.
All of this is because medication to suppress Cole's dark side no longer works.
The battle between the two begins Thursday night.