Shawnee native Theodore Hilk died of accidental overdose in Chicago, report says A Chicago Police squad hauls away potentially hazardous materials from a downtown Chicago apartment following an investigation into the death of Theodore Hilk, 30, a Shawnee native whose body was discovered March 23. The Cook County Medical Examiner has determined Hilk died of an accidental overdose of lidocaine. Image via Chicago Police Twitter account. Investigators have determined that Theodore Hilk, a 30-year-old Shawnee native whose body was discovered in March in his high-rise apartment in downtown Chicago, died of an accidental overdose of lidocaine, a drug typically used as an anesthetic in dental procedures.