A free true crime series launching Monday, Aug. 3, at Charles D. Switzer Library will let Cobb County residents play detective on some of Georgia's most notorious unsolved cases.

The Georgia Room's Summer True Crime Series kicks off at 6 p.m. with weekly sessions running through August, the Cobb County Courier reported. Each meeting explores a different infamous Georgia crime and the communities affected. Switzer Library, located just off Marietta Square, is the hub of the Cobb County Public Library System and serves residents across the county, including East Cobb.

The centerpiece is the Cold Case Club, which puts a sleuthing spin on the traditional book club format. Registered participants will receive a digital packet of newspaper clippings and documents related to the 1965 disappearance of Mary Shotwell Little before gathering on Tuesday, Aug. 25, at 6 p.m. for a group debrief, according to the Cobb County events calendar.

Little, a 25-year-old newlywed and employee of Citizens & Southern Bank in Atlanta, vanished from Lenox Square on Oct. 14, 1965. Her car was found the next day with blood evidence and unexplained mileage. The case has never been solved.

A documentary titled "The Vanishing" was in production as of October 2025, reflecting continued public fascination with the case more than 60 years later.

Cole Hale, manager of the Georgia Room, organized the series. The Georgia Room is a genealogical and historical archive within Switzer Library that holds Cobb County records dating to 1970.

Cold Case Club registration is required through Eventbrite. The weekly True Crime Series sessions are free and open to walk-ins.

The series begins the same day Cobb County School District students return to class, offering a free evening program for adults as the school-year schedule resumes.

Switzer Library is at 266 Roswell St., Marietta. Hours are Monday through Wednesday, 10 a.m. to 8 p.m.; Thursday and Friday, 10 a.m. to 6 p.m.; Saturday, 10 a.m. to 5 p.m.; and Sunday, 1 to 5 p.m. Call 770-528-2320 for details.