Captain Black opened the door to visit his friends, Tom and Joanne. He stood in the doorway, shocked to see his two friends dead on the floor. Near their bodies were pieces of shattered glass and a small puddle of water. The cat purred happily in the corner of the room.
"They died of suffocation," thought Captain Black. His eyes narrowed. "And I know who murdered them!"
~Who is the murderer AND how does Captain Black know that his friends died of suffocation?~
