Mathilde von Sahnd
A psychiatrist who is employed by a home for the mentally ill and unstable. She oversees the treatment of three mentally ill physicists who each reside in one of three rooms that she monitors. Her employer is called Les Cerisiers Sanatorium, and it is considered to be one of the most fancy, elite psychiatric facilities available. Mathilde von Sahnd has a good reputation because of her work there. She is tasked to solve random murders that have been happening at the sanatorium.
Herbert George Beutler
This physicist is Patient One of von Sahnd's treatment. He is allowed to work in the drawing room with the other physicists whenever solving difficult mathematical or scientific problems. He is monitored by female nurses and checked continually by von Sahnd. He is convinced that he is literally Sir Isaac Newton incarnate.
Ernst Heinrich Ernesti
Patient Two is a little bit nutty himself. Ernesti is also a physicist at the Les Cerisiers Sanatorium, and he also believes he is a reincarnated man of renown. He believes he is literally Albert Einstein, and like the others, he is monitored constantly by a flow of female nurses, and overseen by von Sahnd.
Johann Wilhelm Mobius
Instead of believing he is someone he isn't, Mobius, or Patient Three as von Sahnd calls him, believes he receives a divine visitor. He feels that King Solomon visits him regularly during his stay in the sanatorium, in all his splendor and wisdom. This man must preserve his safety and innocence knowing that one of the others is a murderer.
