Oh, Little Girl Lost - mine as well. Saw this a few months ago local OTA TZ marathon.
Remember The Hitchhiker with Inger Stevens?
This site should list them all
http://epguides.com/TwilightZone/
A good site for other show episodes as well
http://epguides.com/
The Hitchhiker was also great and scary. There are so many classics. The Little People and To Serve Man are also favorites of mine.