Haunted Forest by Candlelight

Markoff's Haunted Forest, sponsored by Camp Calleva, features candlelit trails with a variety of haunts, including the Grim Reaper and Chainsaw Man. There also are hayrides, face painting and a haunted bus. Today, tomorrow, Saturday and Tuesday-Oct. 31, 6:30-9:30 p.m. weekdays and 6:30-10:30 p.m. weekends. 19222 Martinsburg Rd., Dickerson. $15-$20. 301-216-1248 or www.calleva.org.

Olney's 'Field of Screams'

The third annual Olney Boys and Girls Community/Good Earth "Field of Screams" features a 30-minute walk through a haunted forest. A new attraction is the "Corn Maze of Mayhem." OBGC Community Park at Friedman Fields, 4501 Olney-Laytonsville Rd. 6:30-9 p.m. today-Sunday and next Thursday-Oct. 31. $10 at the gate; $5, children's activities. Tickets can be purchased only at the gate the night of the event. Free. 301-570-7049 or www.OBGC.com.

After Dark in Rockville

Rockville's Halloween program features free events tomorrow, including Rockville Cemetery tours at 6:15 and 7 p.m. and a spooky trail at Croydon "Creep" Nature Center, 852 Avery Rd., 7-8 p.m. Bring a pumpkin or buy one to decorate, $1. There also will be glow-in-the-dark activities at the climbing gym at 6 p.m. and drive-in movies at Rockville Civic Center Park, 603 Edmonston Dr.: at 7 p.m., "It's the Great Pumpkin, Charlie Brown," and at 7:30 p.m., "E.T. the Extra-Terrestrial," $5 for parking. 240-314-8605.

For Lighter Thrills

Twinbrook Community Recreation Center hosts games and activities, including scarecrow making, pumpkin painting, a balloon artist, a fortuneteller and Halloween bingo. 1-3 p.m. Saturday. 12920 Twinbrook Pkwy., Rockville. $1, $2 for pumpkin painting or scarecrow making. 240-314-8830.

'Haunts and Hollers'

Washington Storytellers Theater and Class Acts Arts present storytellers Baba Jamal Koram and Chris Patton, who will tell creepy tales with sound effects from African drums and computer-generated sounds of a video harp. 7 and 9 p.m. Saturday. Black Box Theater, Montgomery College, 7600 Takoma Ave., Takoma Park. $15; $10, seniors and students; $5, Montgomery College students and faculty. 301-588-4475 or www.classactsarts.org.

'Health-O-Ween'

Bauer Drive Community Center presents a "Health-O-Ween Fall Harvest Party," with activities including a live pumpkin search and tips for having a healthy harvest. 10 a.m.-2 p.m. Tuesday. 240-777-6821 or www.montgomerycountymd.gov/rec and click on "Events."

Story Time at Strathmore

Strathmore Hall Arts Center presents a tea with storyteller Ellouise Schoettler and pianist Victor Dyni. 1 p.m. Wednesday. 10701 Rockville Pike, North Bethesda. $22. 301-530-0540 or www.strathmore.org/calendar/upcoming_events.asp.

An Organ of Charity

Westmoreland Congregational United Church of Christ presents its annual Halloween concert on the Aeolian-Skinner Organ. 7:30 p.m. Oct. 29. One Westmoreland Cir., Bethesda. Free, but contributions will be collected for the Dinner Program for Homeless Women, a nonprofit organization in the District. 301-229-7768.

Ghosts of Montgomery

Meet the ghosts of Montgomery County's past in a tour and storytelling event called "In Search of Ghosts," sponsored by the Montgomery County Historical Society. In Rockville, at 7, 7:15, 7:30 and 7:45 p.m. Oct. 29-30, meet at the Old Baptist Cemetery, West Montgomery Avenue and Route 28, and walk by candlelight to the Beall-Dawson House. In Germantown, at 7, 7:15, 7:30 and 7:45 p.m. Saturday, meet at the Waters House at Pleasant Hills, 12535 Milestone Manor Lane. $12; society members, $8. Not recommended for children 8 and younger. Reservations required. 301-340-2825.

Not-Too-Scary Stories

The Twinbrook Tellers present "Not-So-Scary Stories and Harvest Tales" at 10:30 a.m. Oct. 30, for ages 6 and older. Kensington Park Library, 4201 Knowles Ave., Kensington. Free. 301-897-2211.

Dance the Afternoon Away

Lincoln Park Community Center presents a "Halloween Bash," featuring a dance and costume contest, pony rides and a petting zoo. 3-5 p.m. Oct. 30. 357 Frederick Ave., Rockville. $1, residents, $3 nonresidents. 301-314-8116.

Mall 'Spook-Tacular'

White Flint Mall presents its annual free event "Halloween Spook-Tacular," featuring a magic show, balloon artists and entertainers. Children can also go store to store trick-or-treating at 5 p.m. Event is 4-6 p.m. Oct. 31. 11301 Rockville Pike, North Bethesda. 301-468-5777.

In the Spirit of Mrs. O'leary

Mrs. O'Leary's Irish Restaurant & Pub will host its third annual Halloween fundraiser, which benefits the Gaithersburg St. Patrick's Day Parade, 4-8 p.m. Oct. 31. The event features a singing contest, Irish dancers, bagpipes players and live music by Kim Hartley and Pat Garvey, 555 Quince Orchard Rd., Gaithersburg. Donations will be accepted at the door. 301-947-1993.

Haunted Highway

Take the train on the Walkersville Southern Railroad to visit the Haunted Highway at Fountain Rock Nature Center. Walkersville Community Park, at the end of Kenneth Drive in Walkersville. 5:30-9:30 p.m. Saturday. $8; $5, ages 2-5; free, 2 and younger. 301-696-2936.

-- Compiled by MARK JONES

Jon Burnsky, 9, left, Danny Pascal, David Johannes and P.J. Burnsky prepare a "Field of Screams" on Monday for the Olney Boys and Girls Club.