Expanding Brain

I THINK IT WAS A SNAKE. I BELIEVE THAT IT WAS A SNAKE WHICH KILLED JULIA. THE IDEA OF A SNAKE INSTANTLY OCCURRED TO ME, AND WHEN I COUPLED IT WITH MY KNOWLEDGE THAT THE DOCTOR WAS FURNISHED WITH A SUPPLY OF CREATURES FROM INDIA, I FELT THAT I WAS PROBABLY ON THE RIGHT TRACK. MY ATTENTION WAS SPEEDILY DRAWN TO THIS VENTILATOR, AND THE BELL-ROPE WHICH HUNG DOWN TO THE BED. THE DISCOVERY THAT THE ROPE WAS A DUMMY, AND THAT THE BED WAS CLAMPED TO THE FLOOR, INSTANTLY GAVE RISE TO THE SUSPICION THAT THE ROPE WAS THERE AS A BRIDGE FOR SOMETHING PASSING THROUGH THE HOLE AND COMING TO THE BED. THE IDEA OF A SNAKE INSTANTLY OCCURRED TO ME, AND WHEN I COUPLED IT WITH MY KNOWLEDGE THAT THE DOCTOR WAS FURNISHED WITH A SUPPLY OF CREATURES FROM INDIA, I FELT THAT I WAS PROBABLY ON THE RIGHT TRACK.