Visitors are encouraged to celebrate Halloween early by attending the fictionalized historical play “Who Done It: A Historic Murder Mystery” at 1 and 3 p.m. Aug. 5 at The Old State House, 25 The Green, Dover.

Created by historic-site interpreters at The Old State House, “Who Done It: A Historic Murder Mystery” will transport attendees back to the 18th century to help Delaware physician James Sykes solve the mysterious case of Samuel Bedford III’s murder. Armed only with a checklist and hints from Sykes, visitors will have a chance to question those closest to Bedford and draw their own conclusions as to “who done it.”

Admission is free and open to the public, but due to space restrictions, reservations are suggested by calling 744-5054.