The cast of Ben Stiller's "Severance" made a surprise appearance as their characters inside a glass box at Grand Central in New York City.

Sequels are hard and often disappointing. There are the rare exceptions, when a sequel is somehow even better. Empire Strikes Back, Paddington 2, Road Warrior. Far more often, they leave us disappointed. A story is dragged out too long for its own good, or it’s a cheap money-grab.