When you're trying to decide where to eat, knowing what's on the menu is important. But for restaurants trying to bring customers through the door, what's not on the menu is just as important.
Secret menus aren't new. In-N-Out Burger has had one for years. But experts say more companies are now adding secret menu items, which are even catching on overseas in places like the United Kingdom and Singapore.
Maximina Hernandez says she begged her 23-year old son, Dionicio, to give up his job as a police officer in a suburb of Monterrey. Rival drug cartels have been battling in the northern Mexican city for years.
But he told her being a police officer was in his blood, a family tradition. He was detailed to guard the town's mayor.