Deborah, sorry to hear about your ceiling. It most likely is a chimney, a valley or a flashing that has failed. Depending on the age of your roof, and this will be either a simple repair or a complete tear off. If you can poke your head up into the attic you can get a better idea of the area leaking, you will need a flashlight most likely. If you don\’t feal comfortable with ladders, give me a call at 309-373-2209, and I can meet with you and give you a better idea.