"Good!" Jill wondered how the devil she possibly could get back in to see him - she certainly couldn't depend on Dr. Brush having another convenient case of trots.  She realized now that the "broken" lock had not been broken and her eye swept around to the corridor door - and she saw why she had not been able to get in.  A hand bolt had been screwed to the surface of the door, making a pass key useless.  As was always the case with hospitals, bathroom doors and other doors that could be bolted were so arranged as to open also by pass key, so that patients irresponsible or unruly could not lock themselves away from the nurses.  But here the locked door kept Smith in, and the addition of a simple hand bolt of the sort not permitted in hospitals served to keep out even those with pass keys.