In Calvin v. State (1982), 35 Ill. Ct. Cl. 611, the Court denied a claim of a claimant who was admitted to Tinley Park Mental Health Center in 1975. At the time the claimant entered the Tinley Park Mental Health Center, he could not leave without permission or a pass, and the doors to his unit were opened and closed with a key which was in the hands of authorized personnel. The claimant asked permission to leave the area but was refused. Upon observing an attendant of the hospital leaving, he ran through the door and exited the facility. Approximately 25 minutes after he escaped from the facility he was discovered dead on nearby railroad tracks. In Calvin, the claimant alleged that the respondent failed to provide proper care, supervised patrol, or properly trained security guards, thereby breaching its duty of care towards the claimant. In the Calvin matter, the parties presented testimony of several physicians and psychiatrists with regard to the suitability of the care rendered and security precautions taken. The Court denied the claim, holding that the respondent was not liable because it could not have known nor predicted the claimant's escape.