NEWTON-Although Newton High School teacher Brendan Scullin interacts with hundreds of students each day, most have no idea that he leads a secret life. By day, Scullin is a mild-mannered United Sates history teacher. But by night he turns into something quite different. He becomes, well, an Ac-tor! Scullin, who has been teaching at Newton High School for five years, started as a theater major in college but decided the life of a full-time actor was not for him. "I decided to go into teaching where I could take advantage of my love for history while bringing theatrics into the classroom," said Scullin. He bridges the two worlds by keeping his feet firmly planted in both. At Newton High School he uses his acting skill to dramatize each history lesson, making them more interesting to the students. In addition to history, Scullin teaches two theater arts classes and is in charge of the two theater productions put on at the school each year. Out of the classroom, Scullin is an actor in community theater productions. He has been in more than 50 plays and musicals and is currently in the production of Shady Business, a comedy now playing at the Off-Broadstreet Theater in Hopewell. Off-Broadstreet is a dessert' theater, similar in concept to dinner theaters. Patrons feast on dessert, fruit, and coffee or tea and then sit down to enjoy the show. Scullin plays the role of Larry' a supporting character who's interest in a gangster's girlfriend leads to misadventures and mistaken identities. The show runs through June 25. For reservations contact the Off-Broadstreet Theater located at 5 South Greenwood Avenue, Hopewell 609-466-2766.