Circumstantial evidence is occasionally very convincing, as when you find a trout in the milk, to quote Thoreau's example.
Arthur Conan DoyleMy life is spent in one long effort to escape from the commonplaces of existence. These little problems help me to do so.
Arthur Conan DoyleThe man might have died in a fit; but then the jewels are missing," mused the Inspector, "Ha! I have a theory. These flashes come upon me at times... What do you think of this, Holmes? Sholto was, on his own confession, with his brother last night. The brother died in a fit, on which Sholto walked off the treasure! How's that?" "On which the dead man very considerately got up and locked the door on the inside," said Holmes.
Arthur Conan Doyle