On the Brink

A Houston doctor is found to have ingested a deadly chemical that is all over his workplace, leading his co-workers to speculate whether or not it was an accident, a suicide attempt, or if somebody deliberately poisoned him. Plus when a New Jersey man mysteriously disappears, the authorities have no leads on where he could possibly be, until a car in a nearby town erupts into flames, which leads to a huge break in a case involving several surprise twists.