In the pulse-pounding thriller 'On the Edge', a Spanish subway train operator in Brussels witnesses his estranged son Hugo fall to his death off the edge of a platform. Leo had not seen his son for years, but is spurred to investigate the mysterious circumstances of his passing. He discovers that Hugo was involved in a bloody heist, the discovery of which puts Leo in the crosshairs of the police. Leo’s skills in tracking andapprehending violent criminals, as it turns out, are not those of a public transit employee.