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Photography by Jamie DiVecchio Ramsay



The Mercury Endeavor, LLC is pleased to announce an expansion of our services with the opening of the O’Connor & Semmerling Law Group, LLC – a criminal defense firm. O’Connor & Semmerling Law Group is proud to announce its collaboration with the esteemed Law Offices of Raymond G. Wigell, Ltd. Please visit our new websites to learn more about our legal services and us.

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The Mercury Endeavor, LLC
25543 West Scott Road
Barrington, Illinois 60010
Tel. 847-387-4061
FAX. 847-387-4091


Tim Jon Semmerling, PhD, JD
Tel. 817-707-8071


Stephen M. O’Connor, JD
Tel. 847-769-2613