Henryk Grossmann was the first Marxist economist that proposed a theory of crisis based on the Marxian law of the falling rate of profit due to the increasing organic composition of capital. This view, while initially disappointingly minotirarian, has become very popular nowadays within Marxist Political Economy. At the same time Grossmann′s theory has been severely criticised by many economists (e.g. P.Sweezy, Howard & King etc.). In this essay, first, Grossmannn′s theory is presented. Then it is reformulated so as to be comparable to the Harrod-Domar tradition of growth models. Third, older and newer critiques are being reviewed critically. Finally, it concludes by arguing that Grossmann′s theory – despite certain deficiencies to a large extent justified by its pioneering character- has a valid methodological and analytical basis. As such it is a true founder of modern theories of the falling rate of profit theory of crisis.