But, for the moment, he concentrated on the staff at Aimhursts. And the last of the staff to leave the office yesterday evening had been Hal Gallagher and Marian Steadman, so either of them would have had the opportunity to switch the yoghurt cartons and remove Barstaple’s lap-top, which, Amy Glossop had revealed, Barstaple had been using in his office on the day of his murder. So, too, would Albert Smith, the security guard. He had been alone in the premises from about 5.30 when Gallagher and Marian Steadman had left till the cleaners had arrived an hour later. Though, like the cleaners, Smith worked for another firm, so unless they discovered a past connection with Barstaple he would have no reason to wish him dead. But, as Llewellyn now pointed out, even if there was no past connection
