Fergus Hume,
The Gentleman Who Vanished: A Psychological Phantasy
“ As Adrian Lancaster he had been accused of murder, and hidden his personality in the body of Michael Roversmire to escape, but now he was accused of murder as Michael Roversmire, and where could he hide now—where?Like a flash of light a solution of the problem broke on his bewildered brain. The old man whose personality he had assumed had told him that if the body of Dr. Roversmire died by accident or suicide, the soul would have to go back to its own body. Well, he would do so—he would kill himself in the body of Dr. Roversmire and wake as from a trance in the body of Adrian Lancaster. ”
