“The lady’s food was mixed with anticoagulant rodenticides,” who’s talking?

“A rat poison,” a familiar voice. I slowly opened my eyes. The light blue decor dawned on me. Where am I? I felt a painful sensation in my throat.

“Yes, Mister Jaccobich. It’s a rat poison that can end a lady’s life if not treated promptly. Fortunately, I am here on the island. If not, you may be mourning this woman right now,” I looked at the source of the voices.

Two people were standing near the edge of the bed I was currently lying on; one was unfamiliar wearing a tuxedo while a stethoscope was hanging around his neck,...