"Martinsson had sifted through the tip-offs. Everything that the police learnt was fed into a computer. Then he did a rough sort. The most ridiculous ones never got beyond the print-outs. "Hulda Yngveson phoned from Vallby and said that is was the disapproving hand of God that dealt the blow," said Martinsson. "She always calls," sighed Rydberg. "If a calf runs off, it's because God is displeased." "I put her on the C.F. list," said Martinsson. The sullen atmosphere was broken by a little amusement when Martinsson explained that C.F. stood for "crazy fools"."