When things go bump in the night, Grandma or Grandpa will keep you safe.

That was the scene Saturday morning at Bethel Park Library for "Trick or Treat with Grandma and Grandpa" as costumed youngsters ages 2 to 6 heard spooky stories, sang seasonal song and made crafts. The celebration drew about 40 children and grandparents.

Another event for the entire family will be held from 7 to 8:30 p.m. Saturday at the library.

Activities will include Halloween crafts, games, stories, songs, candy prizes, a chocolate fountain and a "scary wagon ride through the adult nonfiction section,'' said the Rev. Ingrid Kalchthaler, head of youth services at the library.

No registration is required, and everyone is invited.

The grandparent program, in its second year, was developed by Ms. Kalchthaler and Mary Mullen, head of senior adult services.

"We would do it all again," said Arlene Ball, of Bethel Park, who accompanied her 2-year-old grandson Michael Payne, who was visiting from Mystic, Conn., and wore a giraffe costume.

Another out-of-towner was Suzy Daugherty, of Sharon, Mercer County, who came to spend time with her grandsons Calvin and Aidan Walsh, of Bethel Park. Calvin, 5, wore gold-and-black Steelers clothes, and Aidan, 7, chose to dress as an alien ghost.

Gerry Woolensack, of Bethel Park, said her granddaughter, Sierra Kuzak, 5, who dressed as a princess, had an "awesome time."

The Bethel Park girl said she couldn't wait to tell her parents, Jennifer and Guy Kuzak, and her grandfather, Frank Woolensack, about hermorning at the library with her grandmother.