Boo at the Zoo: 9:30 a.m. to 4 p.m., Baton Rouge Zoo, 3601 Thomas Road. The trick-or-treating event will have a photo booth, treat stations and a hay maze. brzoo.org.
“The Woman in Black”: 2 p.m., Theatre Baton Rouge, 7155 Florida Blvd. Tickets for the play are $25 for individuals, $22 for group members and $15 for students in advance. theatrebr.org or (225) 924-6496.
“Five Flights”: 2 p.m., Reilly Theatre, LSU campus. The play surrounds a sibling debate about an inheritance after their father dies. Tickets are $18 for the general public, $15 for seniors/faculty/staff and $12 for students. (225) 578-9286.
Sunday in the Park: 2 p.m. to 5 p.m., North Boulevard Town Square, Downtown. Free concert featuring Zydeco music by Terrance Simien. Event will also include face painting and balloon creations. (225) 344-8558 or www.artsbr.org.
Fall Festival: 2 p.m. to 5 p.m., S.E. Mackey Center, 6534 Ford St. The free event will feature games, food and entertainment. (225) 354-0808.
Micaela Mone’ Book Signing: 3 p.m., Delmont Gardens Branch Library, 3351 Lorraine St. Micaela Mone’ will read from her book, “Behind Closed Eyes” and sign copies. (225) 354-7050.
Fall Fair: 3:30 p.m. to 6 p.m., Rural Life Museum, 4560 Essen Lane. “Haints, Haunts & Halloween” is an old-fashioned country fair that will feature storytelling, face painting, cake walks, pumpkin decorating, wagon rides, music, historic games and trick-or-treating. Admission is $5 per person. (225) 765-2437 or www.rurallife.lsu.edu.
Lenard Tillery Book Signing: 4 p.m., Scotlandville Branch Library, 7373 Scenic Highway. Lenard Tillery, a local author, will sign copies of his book, “Not Too Easy,” a book about a young man dealing with life in New Orleans before and after Hurricane Katrina. (225) 926-5693.
“Haunter”: 7 p.m., Manship Theatre, Shaw Center for the Arts, 100 Lafayette St. IFC Midnight will present the limited new release horror movie. It is rated R. Tickets are $8.50. manshiptheatre.org or (225) 344-0334.
LSU Percussion Ensemble: 7:30 p.m., School of Music Building, LSU campus. Admission is $10 for the general public and $5 for faculty, staff, seniors and students. (225) 578-5128.