“What was she doing here?’ she asked suddenly. ‘Mary Blakiston?’ ‘When?’ ‘The Monday before she died. She was here.’ ‘No, she wasn’t.’ Johnny laid down his knife and fork. He had eaten quickly and wiped the plate clean. ‘Don’t lie to me, Johnny. I saw her coming out of the shop.’ ‘Oh! The shop!’ Johnny smiled uncomfortably. ‘I thought you meant I’d had her up here in the flat. That would have been a right old thing, wouldn’t it.’ He paused, hoping his wife would change the subject but as she showed no sign of doing so, he went on, choosing his words carefully. ‘Yes . . . she did look in the shop. And I suppose that would have been the same week it happened. I can’t really remember what she wanted, if you want the truth, love. I think she may have said something about a present for someone but she didn’t buy nothing. Anyway, she was only in for a minute or two.’ Gemma Whitehead always knew when her husband was lying. She had actually seen Mrs Blakiston emerging from the shop and she had made a note of it, somehow divining that something was wrong.”
―
Anthony Horowitz,
Magpie Murders