Patricia Wentworth 
Listening Eye [EPUB ebook] 

No one would ever have guessed that Paulina Paine was deaf, and that her ability to lip-read was astonishing. So the two men who met one day during the showing of a new art exhibition did not realise until too late that the middle-aged tweedy figure sitting out of earshot could understand every word they said. And it had been no ordinary conversation. In fact, Paulina was so shaken by its implications that she went to see Miss Silver straight away. As the violence escalates, Miss Silver finds herself at a very tense house party where all the guests are linked in some way to Paulina. And one of them is a killer …