The prison authorities had taken multi-step detailed precautions for the safe conduct of the examination. However, some lapses on their part at critical moments proved to be a boon for Evans.
First of all, one tried to verify the identity of the invigilator McLeery and that turned out to be a key mistake in this case. Similarly, the identities of the van driver and the officer who handcuffed Evans were not verified. All of them later turned out to be Evans’ accomplices. The Detective Superintendent also acted hastily and did not drive the injured McLeery to the hospital.
This gave Evans the chance to escape. Finally, the Governor, who had a sharp presence of mind and hawk-eyed vigil, made the greatest blunder. When he nabbed Evans at the hotel, he did not bring him to the jail with him and sent him with a driver and a prison officer. Thus, Evans escaped yet again.