Christopher Grimes, a 40-year-old resident of Chicago, is the producer and director of the film A Second Knock at the Door.The film is part of the Canton Film Fest at the Canton Palace Theatre, 605 Market Ave. N., Thursday through Saturday.Tickets for individual films are $5. They are $18 for the entire festival.Grimes and Peggy Buryj, the mother of Army Spc. Jesse Buryj, will answer questions after the 9 p.m. Thursday showing of A Second Knock at the Door.For more on the festival, go to www.cantonfilm.com.