A professional psychiatrist, Isaac uses his warm, calm, and collected demeanour to win the trust of his patients. He's intelligent and extremely observant, but suffers from extreme OCD. Isaac has a lofty impression of his chosen profession that borders on a saviour complex - and believes that by delving into people's dark pasts, he's fixing them and making the world a better place. Through the series, Isaac is profoundly affected by the loss of his closest friend and partner in his practice, Jonas Borner, and as the serial killer case unravels, it is slowly revealed that this outwardly intelligent and sensitive man may be hiding darker depths to his own psyche by subsuming himself in the darkness of his patients.
