The theme of Youth Theatre Northwest’s annual Mercer Island Haunted Forest, which began last week, is “Senseless.”

Evening tours run Oct. 19, Oct. 20 and Oct. 27 for everyone 8 years and older. The first tour leaves at 6:30 p.m. and the last leaves at 9:20 p.m. Tours are approximately 40 minutes long.

Daytime tours for younger kids, ages three and older, will be held on Oct. 21 and Oct. 28. The first day tour begins at 11 a.m., and the last is at 2:20 p.m. The day tours are approximately 30 minutes.

Tickets are $13 to $15 per person.