Four mental patients on a field trip in New York City must save their caring chaperone, who ends up being taken to a hospital in a coma after accidentally witnessing a murder, before the killers can find him and finish the job.

• Universal Pictures
• Imagine Entertainment
• Michael Keaton
• Christopher Lloyd
• Peter Boyle
• Stephen Furst
• Dennis Boutsikaris
• Lorraine Bracco
• Milo O’Shea
• Philip Bosco