Nora Breen arrives inconspicuously in the seaside town of Gore-on-Sea, and takes a room at the Gulls Nest guest house. Supper is at 6 o'clock sharp, and there will be no admittance after 9 - a routine Nora likes, as it reminds her of her former life as a nun. As she settles in, she is careful not to reveal too much about herself to the other guests. Instinct tells her it's better to watch and listen. Because Nora is not here on a whim. She has a disappearance to investigate. Before long, Nora realises that she may not be the only resident hiding something at Gulls Nest. To untangle the web of secrets and deceit, she'll need to do more than just observe. Does she have what it takes to stop a killer?