Hydrogen embrittlement of metals is a sudden and catastrophic failure event and, yet, despite over a century of research there is still debate about the fundamental mechanisms and the relationship between the mechanisms and the ultimate hydrogen-induced failure mode. In this talk, the ongoing efforts to bridge from the hydrogen-enhanced plasticity mechanism, which is based on individual dislocations and the hydrogen shielding concept, and hydrogen-induced failure will be made. Specifically, the relationship between the evolved microstructural state beneath fracture surfaces, the morphological features on the fracture surface, and the macroscopic mechanical properties will be made. This connection will establish the key role of the hydrogen influence on plasticity in establishing the local conditions, hydrogen concentration and local stress, that determine the ultimate failure path. In addition, it will be proposed that there exists a unique evolved microstructural state for each of the observed fracture surface features.