Three upcoming fall social events by the Johnson County Park and Recreation 50 Plus Department provide a good opportunity for participants to mix and mingle.

A Lunch & Learn program entitled “Never Forget - 9/11 Memorial & Museum” will take place at noon Thursday, Sept. 21, at Matt Ross Community Center, Overland Park. Zoom presentation features Noah Rauch from the 9/11 Memorial and Museum in New York City and a catered lunch. Cost is $29/$32 nonresidents.

In the spirit of Halloween, “Murder at the Masquerade,” a murder mystery dinner party with a catered meal, is planned at 5 p.m. Tuesday, Oct. 10, at the Meadowbrook Park Clubhouse in Prairie Village. Participants, who can attend with their masquerade masks, will have the opportunity to play a part in a murder mystery during a masquerade ball. Cost is $79/$81 nonresidents.

Twelve games of mild chili bingo, with prizes for the winners, will be played at 11:30 a.m. Wednesday, Oct. 25, at the Roeland Park Community Center. Everyone will receive a special fall gift. Cost is $17/$19 nonresidents.

For more information or to register, visit jcprd.com or call 913-831-3359.