Sherlock Holmes, Inc.•Henryetta Location• • 29200 Sherlock Lane • Henryetta, OK • 74437 •• (918) 652-7000 • Google Maps Directions (GPS: 400 East Hill Drive • Henryetta, OK • 74437)• From Main Street and 75: East on Main St. Follow the Arrow Signs up the Hill.• From Hwy 40: Exit #240B North 1st Stop Light Turn East Follow the Arrow Signs up the Hill.(on Corner of Highway 75 and I40 in Henryetta)