The knife sliced through both hoses quickly and easily, the blade was scalpel sharp, the mistress gasped the last of the air in her large mask. This birch was trying to kill her, She had to get away, at least she could still see out of her mask but she had minuets at most before she passed out again and then she would be dead. She went to wriggle free of her attacker only to feel the woman’s hand grip the top of her head hard.