When Jace saw that the police weren't making any progress in finding his wife. He broadcasted that anyone who finds his wife will be given the sum of fifty million dollars. It was such a huge amount of money and he knew that no one would resist the urge to earn such an amount of money. 

Just as he had thought, a man came up to them. Luckily he gave them a good lead.

“Back off. if you come an inch towards me. I'm going to kill her!" Darren hollers, his gun still pointed at Constance's head. 

Jace's heart was beating rapidly. Any mistake, Darren will kill his wife. He...