At the price of searing her mind with nightmare pictures that she would never be able to forget, Mary had got what she wanted. For a few minutes she felt so sick that she dared not move, then she slid her hand down, switched off the tape recorder, and said:

'Thanks, Wash. I'll know now what to expect, and be better able to stand up to it. I can't help shuddering, though, at the thought of anyone suffering such a terrible death.'

To her surprise he volunteered her a crumb of consolation.

'Oh, it's not all that bad as a way to die. This guy was brought out from under deep hypnosis no more than ten minutes before he was dead meat. What's that against a medico wising you up to it that you've got incurable cancer, or being tortured till your heart gives out, way the Japs played it on some of our boys they captured in the Pacific war?'

When he had dressed and gone downstairs she switched on the machine again and in a low voice spoke into it. With the possibility now in mind that she might not be able to deliver it herself, but might come across someone she could trust to post it, or leave it with, she gave her name and such particulars as she could about Wash's activities, together with a brief account of how she had become associated with him. She added that anyone into whose possession the spool came should send it to Colonel Verney, care of the Special Branch, New Scotland Yard. Then, with trembling fingers, she cut off the used portion of the tape, concealed the little roll it made in a small box that had held a bottle of nail varnish, put it in her handbag, and replaced the machine on the chair where it had been left from Monday to Friday.

It was as well she did, for later in the day Wash went up to fetch it to be packed with numerous other things he was taking on leave with him. When he said he was going up for it she almost fainted with terror. It seemed certain that he would look inside the box, notice that part of the tape had been cut off, and with his highly developed psychic sense guess what it had been used for. If that happened she knew that he would kill her - that there would after all be a human sacrifice that night, and she would be the victim.

With her heart in her mouth she waited for his return. He seemed to be away for an eternity. At last he reappeared. She could hardly believe it when she saw that his great hook-nosed face was as tranquil as ever and, after he had bellowed for Jim, saw him hand the machine unopened over to the coloured boy.