Federated Church of Ayer -- 21 Washington St. Haunted House, Fri., Oct. 26, 4-6 p.m. for kids' trick-or-treating, 6-9 p.m. for Halloween Spooktacular; $3 for 10 and younger, $5 for 11 and older; hosted by ASRHS Drama Club; 978-772-2545.

First Parish -- 75 Great Road, Bedford. There's Something (Spooky) About Mary Haunted House, in honor of the 200th anniversary of Mary Shelley's "Frankenstein," Fri., Oct. 19, 6-9:30 (PG version), Sat., Oct. 20, 10 a.m.-2 p.m. (G version, all ages, with trick-or-treating), Sat., Oct. 20, 5-9:30 p.m. (PG-13 version); day $5 adults ages 3-up, $4 seniors; night $10 ages 3-up, $8 seniors; http://deadford.blogspot.com, www.HauntedBedford.org.

Townsend VFW -- 491 Main St. Haunted Trail, Tues., Oct. 30, 7-9 p.m.; $7 ($6 with a canned-good donation); benefits Friends of the Townsend Library and VFW Auxiliary; clem6six@verizon.net.

Nashoba Valley Technical High School -- 100 Littleton Road, Westford. Seventh Annual Friends of Nashoba Haunted 5K, Sat., Oct. 20, 10 a.m.., fun run at 9:30; $25 ages 19-59, $15 for 60 and older, $10 for 18 and younger; benefits Nashoba Tech athletics; www.nashobatech.net or www.lightboxreg.com. Halloween Paint Night, Thur., Oct. 25, 5-9 p.m.


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, hosted by Talented Palettes, $35, refreshments; benefits Viking Theatre Company; esmith@nashobatech.net.

Pollard Memorial Library -- 401 Merrimack St., Lowell. Halloween Crafternoon, Sat., Oct. 27, 1 p.m. UNScary Halloween Party, Tues., Oct. 30, 10:30 a.m.

Tewksbury Public Library -- 300 Chandler St.; registration recommended, 978-640-4490, ext. 205, rhayes@tewksburypl.org, www.tewksburypl.org. Halloween Concert for Adults with Jessica Mercy, Wed., Oct. 31, 10:30 a.m.