The Leopard is a crime novel by Norwegian novelist Jo Nesbø. Its Norwegian title is Panserhjerte, which does not directly translate to The Leopard; it rather means something along the lines of "armoured heart". Moreover, "leopard" refers to the stealthy tread of the killer in the book, while "armoured heart" is what Harry Hole himself gains by his experiences. Panserhjerte is also a Norwegian term for Constrictive pericarditis. The Leopard is the eighth novel featuring Nesbø's crime detective, Inspector Harry Hole.