C25 Suffering Sisters!(part III)

"If there really was poison in my place, it would have been detected," Su Yu'an said coldly, casting a glance at Dragonfly.

Dragonfly shrank back involuntarily under Su Yu'an's gaze.

"Third Miss, when it comes to poison, I know a thing or two," Nanny Yuv suddenly interjected. "Some poisons are obvious, but others, even the best doctors might not detect