'Nothing serious' was confirmed by the pathologist. Brenda was virgo intacta.

The canal was flanked on the one side by warehouses. Access could be obtained to the waterfront, but only by dint of climbing over security gates. In addition, from eleven P.M. on, there had been great police activity in Sunnybank, the canyon-like road which serviced the warehouses, for it was in one of these that the night watchman, whose injuries had kept the doctor from sampling Tommy Maggs's blood, had been attacked.

On the other side of the canal, the side where the body had been found, was a grassy isthmus planted with willows and birches to screen the industrial terrace from the view of those taking the air in the pleasant open spaces of Charter Park. This air on the night in question was filled with music and merriment. The city's fortnight-long High Fair was coming to the end of its first week there. The City Fathers in a fit of almost continental abandon permitted the municipal Boating Station to stay open until midnight during the fair and those who tired of the roundabouts and sideshows could hire rowboats to take them across to the isthmus where the trees were strung with fairy lights and a couple of hot-dog stands provided the wherewithal for a picnic. This area was far too well populated for a body to have been dumped in the canal until eleven-thirty when the clouds which had slowly been building up in the south suddenly came rolling northwards, ate up the moon and the stars, and spat rich, heavy raindrops into the sultry night. Within twenty minutes the isthmus was vacated by laughing holiday-makers and cursing hot-dog men alike, while on the canal the pleasure cruisers had either puttered off to more congenial moorings downstream or battened down for the night.

Now a regiment of corpses could have been deposited without drawing much attention.

But by now, Tommy Maggs was already in deep conversation with the police and was to continue in their company until dropped at his door at one-thirty A.M. His father, watching a late western on the telly, confirmed his arrival. So unless he later stole from the house and, carless, contrived to re-encounter Brenda, lure her to the canal bank some five miles away and there murder her, he was in the clear.