In Kimbrough v. Jewel Cos. (1981), 92 Ill. App. 3d 813, 416 N.E.2d 328, 48 Ill. Dec. 297, the court stated: "Liability cannot be predicated upon surmise or conjecture as to the cause of the injury; proximate cause can only be established when there is a reasonable certainty that Defendant's acts caused the injury. No liability can exist unless the Defendant's alleged negligence is the legal cause of the Plaintiff's injury, and if the Plaintiff fails to establish the element of proximate cause, she has not sustained her burden of making a prima facie case and a directed verdict is proper." 92 Ill. App 3d at 817, 48 Ill. Dec. 297, 300.